Seattle, WA
Seattle · WA
Seattle · WA
Tear off and replace existing waterproofing on a 618 sq ft courtyard deck. Install new 2-ply SBS-modified bitumen waterproofing assembly over concrete substrate including asphaltic primer Elastophene 3.0 vapor barrier retrofit drains tapered insulation SOPRASMART cover board and torch-applied SBS cap sheet. Liquid-applied Alsan RS 230 PMMA flashing at terminations and penetrations
We will be removing the current composition shingles. We have no plans to replace sheeting at this time but if needed we will replace with new 1/2" cdx plywood. We will then instal…