Intersection Of Stucco And Roof Waterproofing

Testing performed by the national concrete masonry association ncma indicates the stucco renders the wall as waterproof as if not more than those where admixtures and sealers are applied.

Intersection of stucco and roof waterproofing.

You need to begin with a clean surface. Sill pan for nail flange windows 2020 detail. The roof flashing cannot be installed on the outside of the stucco and counter flashed. With sections where the roof does not extend over the stucco wall or where the stucco wall and roof intersect a special type of metal flashing called kick out flashing must be installed to prevent water intrusion.

In wood frame construction accent features foam accent strips banding and trim should be installed over the brown coat using adhesive and minimum fasteners penetrating the stucco. No matter how skilled the. This article illustrates and discusses alternate or rather goofy attempts at roof wall intersection flashing to prevent leaks water damage and points out where leak risks may remain. Three coat stucco is the most common exterior cladding here in southern california.

Properly installed it s tough durable and attractive but it s not waterproof. The water that does penetrate behind the stucco will then be trapped there or worse forced down the inside of the walls and ceilings possibly causing damage and mold. Weep screed for stucco 2020 detail. The next problem area is where the roof and stucco meet.

In addition wrb paper should be installed at the soffit line and at the top of the stucco walls. Simply paint the sealant onto the stucco and allow it to air dry. However detail asph 4 in the roofing and waterproofing manual provides a blow up of the eave that more clearly depicts the proper integration between the metal drip edge and the roof underlayment. An alternative detail is provided that depicts ice dam protection membrane installed over the roof deck extending over the fascia and.

A great way to add waterproofing to stucco is to waterproof before you apply the stucco. Cantilevered deck joist stucco 2020 detail. By using a waterproof barrier between the home and stucco you add an additional layer of waterproof protection. Finally from an economic standpoint stucco applied over lath systems costs three to four times that of stucco direct applied to the cmu.

Below are more photos of poor flashing at roof to wall intersections with different exterior wall covering materials. Wall to roof deck flashing 2020 detail. Kick out flashing for stucco 2019 detail. Step 1 clean base wall.

Flashing is a waterproof material aluminum steel pvc that is used to keep water out of any openings in the stucco such as where windows and doors are placed or at the intersections between stucco and roof. Flashing a nail flange window 2018 rev detail.