HOFFMAN, Judge:

Appellants contend that the lower court erred in entering summary judgment because it believed the parol evidence rule removed all material factual issues from their trespass suit. We agree and reverse the order of the lower court.

On August 31, 1976, appellants, Joseph and Barbara LeDonne, filed a second amended complaint in trespass against appellees, George and Emily Kessler, in the Monroe County Court of Common Pleas. Appellants made the following pertinent allegations: On October 1, 1973, they purchased appellees' house and surrounding property in Ross Township, Monroe County, in reliance on appellees' fraudulent misrepresentations that the property had no water or sewer problems. In particular, appellees responded to specific questions by informing appellants that (a) the drainage problem in the septic system had been repaired, (b) the sundeck did not leak water, and (c) the cellar did not leak water; appellees deliberately made these false statements in order to induce appellants to execute the agreement of sale. Moreover, because appellees knew that appellants could not discover the defects through visual inspection of the premises, appellants depended upon appellees' good faith in making these assurances. When appellees prepared the agreement of sale, they fraudulently and intentionally omitted the representations concerning water and sewer problems. In reliance on appellees' representations, appellants executed the agreement of sale and a deed. Shortly after appellants moved into their new house, the septic system backed up, and the sundeck and cellar started to leak water. As a result, appellants sustained serious damage to their rugs, sewing machine, and other unspecified personalty as well as the loss of the use of the sundeck and cellar. Appellants asked for damages in excess of $10,000.

Appellants also filed depositions in support of their complaint. Joseph LeDonne described in detail his inspections of appellees' premises prior to execution of the agreement of sale. On one occasion, his wife's father, a carpenter, accompanied him. Both LeDonne and the carpenter noticed black spots underneath the sundeck and on the plywood paneling in the garage directly beneath the sundeck; these spots, in the carpenter's estimation, definitely suggested a water leakage problem. Joseph LeDonne questioned appellee, George Kessler, about the black spots; Kessler responded that although there had been a leak around the chimney, the problem had been corrected. When Joseph LeDonne, his father-in-law, and George Kessler inspected the premises outside the house, LeDonne specifically asked about the septic system. Kessler assured him that the septic system functioned properly, despite a small problem during the previous summer. Kessler showed LeDonne a four inch plastic pipe protruding from the ground; this pipe constituted part of the septic system. Kessler also pointed out a purported drainage field which had been installed to correct the prior septic system problem. LeDonne observed that a portion of the ground had been backfilled and was now fairly smooth; instead of grass, shale covered this segment. LeDonne's observations, coupled with Kessler's representations, satisfied his apprehensions.

In her deposition, Barbara LeDonne confirmed the presence of black spots underneath the sundeck and on the plywood paneling in the garage; these spots made both LeDonnes and her father suspicious of water leakage problems and prompted their inquiries to appellees. Mrs. LeDonne also stated that an inspection of the cellar, which immediately adjoined the garage, revealed damp conditions which again suggested a water leakage problem. These wet conditions triggered questions concerning possible water leakage problems; appellees again proffered reassuring answers.

On September 10, 1976, appellees filed preliminary objections in the nature of a demurrer to the second amended complaint as well as a motion for summary judgment. Both documents asserted that the parol evidence rule barred prosecution of appellants' trespass suit. In particular, appellees relied upon paragraph number six of the agreement of sale: "The parties have full knowledge of the physical appearance of the land and buildings and of the value thereof and there are no verbal representations as to character or quality." Also, the two page agreement stipulated that the parties had read its provisions before signing.

On March 21, 1977, the lower court held that the parol evidence rule prohibited oral testimony in contradiction of the statement in paragraph number six that "there are no verbal representations as to character or quality." Without parol evidence of appellees' alleged pre-agreement oral misrepresentations, no material factual issues remained for the lower court's resolution. Accordingly, the lower court ordered the prothonotary to enter summary judgment unless appellants filed another amended complaint within twenty days. Appellants declined this opportunity; instead, they petitioned the lower court to enter summary judgment so that an appeal could test whether the second amended complaint stated a cause of action. On May 13, 1977, the lower court granted summary judgment. This appeal followed.

Appellants contend that the lower court erred in granting summary judgment on the basis of the parol evidence rule. Pa.R.Civ.P. 1035; 42 Pa.C.S.A. § 1035, authorizes the entry of summary judgment ". . . if the pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any, show that there is no genuine issue as to any material fact and that the moving party is entitled to a judgment as a matter of law. . . ." See also Cercone v. Cercone, 254 Pa. Super. 381, 386 A.2d 1. The parties agree that if the parol evidence rule bars testimony concerning appellees' alleged oral misrepresentations, then no material issues require a factfinder's resolution. Therefore, we must determine the applicability of the parol evidence rule to the instant case.

Succinctly stated, the purpose of the parol evidence rule is ". . . to preserve the integrity of written agreements by refusing to permit the contracting parties to attempt to alter the import of their contract through the use of contemporaneous [or prior] oral declarations." Rose v. Food Fair Stores, Inc., 437 Pa. 117, 120-21, 262 A.2d 851, 853 (1970). "Where parties, without any fraud or mistake, have deliberately put their engagements in writing, the law declares the writing to be not only the best, but the only, evidence of their agreement." Gianni v. Russell Co., 281 Pa. 320, 323, 126 A. 791, 792 (1924). In Bardwell v. The Willis Co., 375 Pa. 503, 506, 100 A.2d 102, 104 (1953), our Supreme Court articulated the following definition of this rule:

"Where the alleged prior or contemporaneous oral representations or agreements concern a subject which is specifically dealt with in the written contract, and the written contract covers or purports to cover the entire agreement of the parties, the law is now clearly and well settled that in the absence of fraud, accident or mistake the alleged oral representations or agreements are merged in or superseded by the subsequent written contract, and parol evidence to vary, modify or supersede the written contract is inadmissible in evidence. Phillips Gas and Oil Co. v. Kline, 368 Pa. 516, 519, 84 A.2d 301; Grubb v. Rockey, 366 Pa. 592, 79 A.2d 255; Walker v. Saricks, 360 Pa. 594, 63 A.2d 9; Gianni v. Russell Co., Inc., [supra]; Speier v. Michelson, 303 Pa. 66, 154 A. 127; O'Brien v. O'Brien, 362 Pa. 66, 66 A.2d 309; Russell v. Sickles, 306 Pa. 586, 160 A. 610." See also Nicolella v. Palmer, 432 Pa. 502, 248 A.2d 20 (1968); United Refining Co. v. Jenkins, 410 Pa. 126, 189 A.2d 574 (1968); National Cash Register Co. v. Modern Transportation Co., 224 Pa. Super. 138, 302 A.2d 486 (1973).

While our courts have applied the parol evidence rule in a wide variety of contexts, concentration upon cases involving agreements of sale and similar property transactions will expedite analysis of the rule's application in the instant case. Fortunately, our Court, per PRICE, J., has recently undertaken a comprehensive review of these cases. See National Building Leasing, Inc. v. Byler, 252 Pa. Super. 370, 381 A.2d 963 (Allocatur denied April 17, 1978). Borrowing from Byler, we will recapitulate the facts and holdings of the pertinent cases and then fit the case at bar into the pattern established by Byler and its predecessors.

In Bardwell v. The Willis Co., supra (hereinafter Bardwell), defendants leased property to the plaintiffs for use in plaintiffs' bottling business. The written lease specifies that the lessees had examined the premises and found them to be in sound condition, that they had not received any warranty as to the condition or repair of the premises for the intended use, and that the lease contained the entire agreement between the parties. When the premises proved to be unsuitable for their bottling business, the lessees sued in trespass. The complaint alleged that the defendants had orally represented that the premises would be fit for a bottling business, and that plaintiffs had entered into the lease in reliance on these representations. The complaint did not specify the particular defects which made the premises unusable. The lower court sustained the lessors' preliminary objections in the nature of a demurrer, and the Supreme Court affirmed on the basis of the parol evidence rule. The Court emphasized that the alleged oral misrepresentations concerned matters fully and specifically covered in the integration clause of the written agreement. Observing that admission of the proffered parol evidence would make these contractual clauses worthless, the Court stated: "What is the use of inserting such clauses in agreements if one of the parties thereto is permitted to prove by oral testimony that he didn't examine and wasn't familiar with the premises or their condition, or that they would not meet the standards which plaintiffs require? There is no averment by plaintiffs that these clauses in the lease were inserted by fraud, accident or mistake; or (we repeat) that any representation was omitted by fraud, accident or mistake; or that the lease did not contain the entire contract and agreement between the parties. Merely bringing an action in trespass for deceit instead of in assumpsit for breach of contract will not suffice to circumvent the parol evidence rule. If plaintiffs relied on any understanding, promises, representations or agreements made prior to the execution of the written contract or lease, they should have protected themselves by incorporating in the written agreement the promises or representations upon which they now rely, and they should have omitted the provisions which they now desire to repudiate and nullify." 375 Pa. at 508-09, 100 A.2d at 105.

In Berger v. Pittsburgh Auto Equipment Co., 387 Pa. 61, 127 A.2d 334 (1956), the Supreme Court confronted a factual pattern analogous to Bardwell, but sufficiently distinguishable to permit a different result. The parties entered into a written lease whereby defendant-lessee agreed to rent the second floor of a certain property. Plaintiff-lessor knew that the lessee needed this property to store automobile parts which weighed more than 300 pounds per square foot of flooring; the lessor assured the lessee that the flooring had been recently strengthened and would support the lessee's goods. In reliance on this representation, the lessee executed the lease. A contemporaneous written collateral agreement stated that: "[t]he tenant has inspected the premises and accepts the property in its present condition." Subsequently, the floor proved incapable of withstanding a weight of 125 pounds per square foot. When the lessee vacated the premises and stopped paying rent, the lessor confessed judgment. However, upon the lessee's petition, the lower court opened the judgment, and the Supreme Court affirmed. In particular, the Supreme Court ruled that the collateral agreement concerning the inspection of premises only bound the lessee as to any reasonably ascertainable conditions. Because expert tests rather than visual inspection were necessary to determine the strength of the flooring, the Court found the contractual integration clause inapplicable and, therefore, the parol evidence rule inoperative. See also Highmont Music Corp. v. J.M. Hoffman Co., 397 Pa. 345, 155 A.2d 363 (1959) (hereinafter Highmont). National Building Leasing, Inc. v. Byler, supra (hereinafter Byler), is the most recent link in the chain of cases which commences with Bardwell. In Byler, the defendants entered into a written agreement to sell certain realty to plaintiff. Prior to plaintiff's inspection of the premises, the defendants allegedly demolished a number of buildings and deposited the resulting debris and other waste materials in a large hole located on the realty; defendants then filled the hole with soil and covered it with vegetation. Despite knowledge that plaintiff intended to construct a trucking terminal on the premises, defendants allegedly concealed the existence of the debris-filled hole and even informed plaintiff that the debris had been removed from the premises. The parties then executed an agreement of sale which provided that plaintiff had inspected the property and had agreed to buy the property as a result of this inspection and not in reliance on any representations. The agreement also specified that it represented the complete understanding of the parties and that no other oral representations had been made concerning the sale. After plaintiff occupied the land, it discovered the existence of the hole and sued to recover the cost of removing the debris. Our Court reversed the lower court's order sustaining the defendants' preliminary objections on the basis of the parol evidence rule. In an attempt to reconcile Bardwell and Berger, we observed that as a general rule, an allegation that fraud or misrepresentation induced the contract would enable a party to escape the confines of the parol evidence rule. See Highmont, supra; Berger, supra. If a party failed to make such an allegation, but only averred that the contract did not contain certain additional oral terms, then an allegation that the terms had been fraudulently omitted from the contract would be necessary. See Bardwell, supra. Because the buyer in Byler alleged that his sellers' oral misrepresentation induced it to enter into the contract, we found the parol evidence rule inoperative.

In the instant case the lower court, relying upon Pisiechko v. Diaddorio, 230 Pa. Super. 297, 326 A.2d 608 (1974), entered summary judgment on the basis of paragraph number six in the agreement of sale which provides: "The parties have full knowledge of the physical appearance of the land and buildings and of the value thereof and there are no verbal representations as to character or quality." The lower court interpreted the underlined portion of paragraph number six as a complete integration clause which barred testimony of all oral representations concerning the instant land transaction. Appellant asserts, and we agree, that this interpretation cuts too broadly and ignores the interrelationship between the first half of paragraph number six and the subsequent underlined segment. Instead, reading the clause as a whole, we believe that paragraph number six only denies the existence of verbal representations as to the character or quality of land and building conditions reasonably apparent from an inspection of the premises.

Our narrowing construction of paragraph six affords appellants some, but not total, relief. Appellants' allegations concerning the repair of the septic system do not contradict paragraph number six, but their allegations concerning the sundeck and cellar do conflict with this clause. Because the septic system was underground, appellants could not have possessed full knowledge of its physical appearance and adequacy and could not have readily ascertained whether a drainage problem existed. They observed a purported drainage field, but this observation would not reasonably put them on notice that the subterranean septic system still malfunctioned. Indeed, the opposite inference would be more logical. Because appellants could not discern through visual inspection alone the existence of the septic system problem of which they now complain, the wording of paragraph six does not bar the admission of evidence of appellees' alleged misrepresentations concerning septic system problems. See Highmont, supra; Berger, supra.

Appellants' allegations concerning the sundeck and cellar stand on a different footing. Their depositions reveal that when they inspected these locations, they discovered the very conditions involved in the alleged oral misrepresentations. Their inspection revealed black spots underneath the sundeck and on plywood panels in the garage and a dampness in the cellar which strongly suggested the existence of water leakage problems. Despite this knowledge of the physical appearance of the sundeck and cellar, they signed an agreement stipulating that they had received no verbal representations as to the condition or quality of these areas. Therefore, we conclude that paragraph six precludes oral testimony of pre-agreement representations concerning the quality and condition of the sundeck and cellar.

Alternatively, appellants contend that even if evidence of oral representations concerning the sundeck and the cellar would contradict the wording of paragraph six of the sale agreement, their allegation that these representations induced them to enter into the contract sufficed to render the parol evidence rule inapplicable. In Byler, our Court stated: ". . . [E]vidence that one of the parties was induced to enter the contract through fraud or misrepresentation is not barred by the parol evidence rule." Supra, 252 Pa.Super. at 374, 381 A.2d at 965. Given the facts in Byler, the application of this abstract principle made sense. The removal of the debris from the premises constituted a basic precondition to the agreement of sale. The buyer's inspection of the physical premises disclosed no reason to suspect that the sellers had not removed the debris; indeed, the inspection seemingly confirmed the veracity of the sellers' representations. Therefore, at the time the buyer executed the agreement of sale, it reasonably assumed that the precondition had been performed and that contractual protection on this matter would be superfluous. To invoke the parol evidence rule to cover a situation which the buyer could not have envisioned at the time of contracting would be manifestly unfair and would affirmatively aid the perpetration of fraud against an unsuspecting buyer.

The instant case presents facts materially different from Byler and demonstrates why mechanical application of Byler's abstract principle in this case would be inappropriate and, to the contrary, would undermine the policies underlying the parol evidence rule. Here, appellants' inspection of the premises revealed the very problem which they now protest: water leakage in the sundeck and cellar. At the time of executing the agreement of sale, appellants had every reason to insist upon contractual protection against this readily discernible threat. Indeed, even accepting their allegation that these assurances induced them to enter the contract, appellants were particularly imprudent not to insist upon written contractual protection. Instead, appellants signed an agreement in which they explicitly waived their right to rely upon any oral representations they may have received concerning the condition or quality of the physical premises. In short, appellants' allegation that misrepresentations concerning the sundeck and cellar induced the agreement of sale has little functional relevance in the instant case. If we seriously desire to preserve the integrity of written contracts, Rose v. Food Fair Stores, Inc., supra; Gianni v. R. Russell Co., supra, then we must insist upon the application of the parol evidence rule when a party knows about the existence of substantial problems, yet contractually stipulates that he has received no promises about these problems. Rather then rigidly apply the principle of Byler and allow circumvention of the substantive policies of the parol evidence rule by pleading niceties, we should balance the extent of the party's knowledge of objectionable conditions derived from a reasonable inspection against the extent of the coverage of the contract's integration clause in order to determine whether that party could justifiably rely upon oral representations without insisting upon further contractual protection or the deletion of an overly broad integration clause. In the case at bar, appellants actually detected the existence of water problems in the sundeck and cellar, but nevertheless signed a contract stipulating that they received no representations concerning these ostensible defects. Consequently, appellants have failed our test.

Even if our Court decides that a bare allegation of fraudulent inducement is insufficient to nullify the parol evidence rule in the instant case, appellants contend that another of their averments defeats the rule's application: allegedly, appellees fraudulently omitted the oral representations concerning the sundeck and cellar from the agreement of sale. Again, case language, read outside of a particular factual matrix, supports appellants' contention in the abstract; again, this language would vitiate the parol evidence rule if applied blindly to the instant case. Bardwell, does state that ". . . [f]raudulent misrepresentations may be proved to modify or avoid a written contract if it is averred and proved that they were omitted from the (complete) written contract by fraud, accident or mistake." Supra 375 Pa. at 507, 100 A.2d at 104. See also Nicolella v. Palmer, supra; National Cash Register Co. v. Modern Transportation Co., supra; Lloyd Eliott, Inc. v. Lang, 118 Pa. Super. 190, 180 A. 74 (1935). However, appellants aver no specific facts in support of their allegation of fraudulent omission; they assert only that appellees prepared the agreement of sale and fraudulently omitted the disputed representations. Appellants do not aver that appellees deleted the alleged representations or inserted paragraph number six after the execution of the agreement of sale. Nor do appellants allege that the two page agreement of sale form, complete with multiple typed interlineations, was too complicated to read or that appellees unconscionably traded upon superior bargaining position to obtain the integration clause. In short, appellants fail to explain why they ignored the most basic protection against fraud available: reading the agreement before signing it and insisting upon the deletion of offending provisions or the insertion of desired guarantees. If appellants did perform the minimal duty of reading the agreement of sale, then why did they not protest the inclusion of paragraph number six or the exclusion of the alleged oral representations? As the Supreme Court stated in Bardwell: "If plaintiffs relied on any understanding, promises, representations or agreements made prior to the execution of the written contract or lease, they should have protected themselves by incorporating in the written agreement the promises or representations upon which they now rely, and they should have omitted the provisions which they now desire to repudiate and nullify." Supra 375 Pa. at 508-09, 100 A.2d at 105. See also Lloyd Eliott, Inc. v. Lang, supra. Because the integrity of written contracts requires, at a minimum, that parties read real estate contracts before signing, we hold that a mere allegation of fraudulent omission is insufficient unless a party avers facts explaining why perusal of the agreement before execution did not afford adequate protection against the alleged deliberate omission. In the case presently before us, appellants have not pleaded the requisite factual allegations.

Recapitulating: the parol evidence rule bars oral testimony in contravention of paragraph six of the agreement of sale designed to show that appellees misrepresented water leakage problems connected with the cellar and sundeck. Appellants' inspection of the premises revealed the existence of these problems, yet appellants refused to insist upon contractual protection and, to the contrary, expressly waived all right to rely upon oral assurances. However, inspection of the premises could not have adequately disclosed the allegedly deficient state of repair of the septic system. Accordingly, paragraph six cannot be construed to bar testimony or oral representations concerning this condition. Therefore, we reverse the order of the lower court denying summary judgment and remand for proceedings consistent with this opinion.

Order reversed and case remanded for proceedings consistent with this opinion.

PRICE, J., concurs in the result.

JACOBS, President Judge, and SPAETH, J., did not participate in the consideration or decision of this case.