Question juridique clé
Whether the roof understructure was defective and the owner could obtain replacement costs or a reduction of value.
Solution extraite
The court upheld the finding that the work complied with the parties' agreement and with the agreed technical standard; no legally relevant defect was established.
Motifs extraits
The parties had agreed to abandon the Tyvec underlayment and had not insisted on absolute waterproofing. The expert confirmed that the installed understructure was not improperly executed, even if not absolutely watertight, and the factual challenge was largely appellatory or unsupported by a showing of arbitrariness.