
410 A.2d 225 (1980)
The SHERIDAN CORPORATION
v.
William S. SILSBY, Jr. and Norene E. Silsby and Federal Trust Co.
Supreme Judicial Court of Maine.
January 25, 1980.
*226 Weeks, Hutchins, Frye & Welch, Roger A. Welch (orally), Waterville, for plaintiff.
Silsby & Silsby, Raymond L. Williams (orally), Ellsworth, for defendant.
McKUSICK, C. J., WERNICK, GODFREY and GLASSMAN, JJ., and DUFRESNE, A. R. J.
PER CURIAM.
In an action on a contract for the construction of a bowling alley building, plaintiff Sheridan Corporation claimed a balance due in the amount of $24,839.07 and requested enforcement of a lien. Defendants Silsby counterclaimed, alleging defective work and resulting damages. The case was tried before a referee. On this appeal neither party challenges the order of the Superior Court awarding plaintiff the balance due on the contract; plaintiff appeals from that portion of the order awarding defendants $2,780 on their counterclaim for the cost of refinishing the bowling lanes and replacing damaged exterior wall panels; defendants appeal from those provisions of the judgment that modified the referee's report by rejecting a recommended award to defendants of $10,000 for lost profits, $1,515 for the installation of restroom floor drains, and $200 for the replacement of an entryway floor mat.
*227 We agree with the Superior Court that credible evidence in the record supports the finding of the referee that damage to the exterior wall panels was caused by improper installation. We also find support for the referee's conclusion that leaks in the roof caused such damage to the bowling lanes as to require refinishing. Thus, those factual findings survive the "clearly erroneous" test imposed by M.R.Civ.P. 53(e)(2). Accordingly, we deny plaintiff's appeal.
With respect to the rejected counterclaim for lost profits, we agree with the Superior Court that the referee's award of $10,000 was clearly erroneous. In Ginn v. Penobscot Co., Me., 334 A.2d 874, 887 (1975), we made clear that prospective profits are recoverable only if they can be estimated with reasonable certainty. Since the testimony presented by defendants as to anticipated profits was excessively speculative, the recommended award was properly rejected.
Defendants also contend that the Superior Court erred in disallowing the referee's award for restroom drains and entry-way floor covering. Those items were not described or otherwise included in the written contract (see First Nat'l Bank v. Manser, 104 Me. 70, 71 A. 134 (1908)), and the evidence did not suffice to establish any subsequent modification of the contract that could properly include those items within the scope of plaintiff's contractual obligation.
The entry must be:
Appeal of defendants Silsby denied.
Appeal of plaintiff denied.
Judgment affirmed.
No costs on appeal allowed to any party.
NICHOLS, J., did not sit.
DUFRESNE, A. R. J., sitting by assignment.
