How To Insulate Concrete Block At Roof Parapet
The final step is to finish the foam insulation in protective coat of galvanized wire lath and cement.
How to insulate concrete block at roof parapet. Now as you glue the panels to the exposed concrete blocks leave a inch gap at the floor and ceiling and cut holes in the panels to fit around outlets and wall switches. To insulate the parapet the crew attached 2x4 nailers to the poured concrete top cap of the masonry parapet wall using cut nails and powder actuated gun nails. Insulate concrete parapets and steel rooftop penetrations. Max baker and stonewall jackson would be proud.
The cure for parapetitus is continuity of the control layers and letting things move when they have to move. Another is to cast a structural thermal break between the para pet and the heated interior structure supporting it. Then they cut foam to fit the top and sides of the wall and set it in a bed of mortar. Terminate roofing on parapet wall with mechanically fastened termination bar.
For steel stud concrete and masonry block parapets connecting the roof insulation to the wall insulation using a structural thermal break under the parapet wall creates continuous insulation and minimizes the heat loss due to thermal bridging. Roof membrane must lap up wall to minimum of 12 above roof plane or per specifications whichever is greater. But insulating the new block structure to passive house enerphit levels was a challenge. The entire parapet in a layer of insulation.
Uninsulated rooftop connections for parapets hvac units solar equipment and other structures penetrating the roof insulation layer act like cooling fins creating a. Insulate within parapet wall cavity to depth of roof insulation if present. The solution was to wrap the masonry in an exterior insulated finish system eifs including the rooftop parapet. Thermal bridges at concrete parapets mitigated with structural thermal breaks new york ny parapets serve the vital function of protecting the edge of roof assemblies from uplift.
Detail 1 7 brick veneer concrete block detail of low parapet with protected membrane roof detail 1 8 brick veneer concrete block detail at high parapet detail 1 9 brick veneer concrete block detail at high parapet. After the adhesive cures add extension boxes to the outlets and switches and spray foam into every gap top bottom and around each box. Watch as jose maldonado s crew attaches the foam insulation to the concrete cap of the block parapet wall.