Before each window is installed Bituthene Primer is rolled on. Then Bituthene paper installed. Then stainless steel window pans are set and welded for ultimate water proof protection.
The exterior Trellis beams are LVL material which is resist shrinking, warping and splitting. Each exterior Trellis beam is also primed before bituthene paper. Then each beam joist terminating into the house has stainless steel welded so assure no water penetration.