Be sure to pull the building wrap snug and avoid wrinkles and creases. Proper building wrap overlaps, vertically and horizontally 4” to 6”.
Properly installed, high-quality house wraps can help stop the air flow across a building's envelope and create an airtight, high-performance building. A quality house wrap must be tear, UV, and cold resistant, and easy to install.
Note: Inside corners should be tight to the corner. STEP 6 After water-resistive barrier is installed refer to the DuPont™ Flashing Systems Installation Guidelines to prepare and flash windows and doors.
Most house wrap manufacturer installation instructions have minimum horizontal overlaps of 4-6 inches and minimum vertical overlaps of 6 -12 inches. Most also require or recommend 1 in.
Staples are fine, tape those if they are ripping the house wrap otherwise they are fine untaped. The cap staples are recommended as they resist wind damage longer if siding won't be installed for a while but I really generally only use staples.
Most housewrap manufacturers require that every house wrap seam — vertical and horizontal — be sealed with tape, ensuring that the tape is wide enough to sufficiently cover the seam.
Today, most house wrap manufacturers require their product to be installed with cap nails or cap staples. This change definitely slows down the process, but on the upside, capped fasteners hold house wrap to the wall up to 25 times better than staples.
While layering housewraps may not be the optimal choice in most situations, there are instances where it can be a viable solution. Understanding the specific circumstances, the condition of the existing housewrap, and the role of each layer in the system is crucial.
It is important to maintain the continuity of the DuPont™ Tyvek® WRB from bottom to top with proper shingling. Starting from the bottom of the structure, continue wrapping all the way up, overlapping the previous layer of Tyvek® WRB by a minimum of 6”.
With time, or increased water pressure, drops of water will go through Tyvek®. It is suggested that customers should test the performance of Tyvek® for their specific application. Q7: Is Tyvek® breathable? A: Tyvek® is breathable, which means water vapor and gases can go through Tyvek®.
How long should Tyvek® WB be exposed before it is covered with siding? Tyvek® HomeWrap® and Tyvek® StuccoWrap®, Tyvek® DrainWrap™ and Tyvek® ThermaWrap™ should be covered within 120 days (4 months). Tyvek® CommercialWrap®should be covered within 270 days (9 months).
Should there be a vented cavity/airspace on the outside of the Tyvek® wall membrane? Yes, to allow vapour to escape to the outside atmosphere. The cavity/airspace may be vented naturally through cladding/tile joints, or ventilated with airbricks, vents etc.
A housewrap can eventually lose its repellency and allow water to soak through to underlying sheathing, etc. Some housewraps are specifically designed with coatings that resist surfactants. Drainable housewrap provides space to carry water away, mitigating surfactant-induced damage.
TYPAR® laminated house wrap relies on a fragile film to keep air and water out. The film can be scratched or torn during installation, allowing water to seep into exterior walls. With DuPont™ Tyvek® HomeWrap®, air and bulk water holdout is integral—built into the material itself.
2) Secure BreatheEZ™ housewrap firmly in place by fastening it every 12″ to 18″ along the vertical studs using large-headed or plastic cap nails or 1″ crown staples. You may install it over wood-based sheathing, foam insulated sheathing, fiberboard sheathing, or exterior gypsum board.
Yes, DuPont Tyvek can be installed over old house wrap as long as the existing house wrap is Tyvek.
A minimum of a 1" (25.4 mm) overlap on the sill plate is required. For maximum protection, a 2-4"(51-102 mm) overlap on the sill plate is recommended. Be sure to pull the building wrap snug and avoid wrinkles and creases. Proper building wrap overlaps, vertically and horizontally 4” to 6”.
Fix Tyvek® Housewrap with stainless steel staples or corrosion resistant nails.
Primarily, a house wrap prevents water and moisture from seeping through the wall cavity of the home. By installing a house wrap before your siding installation, you can reduce the likelihood of wood rot, mold growth and moisture infiltration in your home.
Yes, House Wrap Does Come First!
Whether you're installing James Hardie siding or not, house wrap is always applied first. The experts place the material in the proper orientation to achieve maximum insulation.