Table of Contents
Can you staple Tyvek house wrap?
Tyvek says you can use 4 staples per 9 feet of house wrap if you tape over them an apply the siding right away. But a cap stapler is better. Apply house wrap up the gables before installing exterior trim, even if the attic is not conditioned.
Do you tape the bottom of Tyvek?
Yes, the DuPont Tyvek HomeWrap should be overlaid from 6″ to 12″ and should be seamed up with 3″ tape. Also, make sure that the DuPont Tyvek HomeWrap is installed similar to shingles on a roof so that the water will not run behind the bottom layer.
Can you put Tyvek on backwards?
Can you install Tyvek® WB with the lettering facing inwards or upside down? Tyvek® HomeWrap® and Tyvek® CommercialWrap® are non-directional and are equally effective if installed with the logo facing the inside or outside of the wall or with the logo oriented in any direction.
Do you install Tyvek before or after Windows?
The most important part of weatherproofing begins before the window goes in. After the house wrap is cut, tuck the bottom flap into the house and install sill flashing. Then fold in the sides of the house wrap, but leave the top flap alone.
Do you tape the bottom of house wrap?
It is critical to seal the damaged house wrap with code-approved contractor sheathing tape before covering with siding. Repair of larger tears in house wrap requires a taped 6-inch overlap of house wrap. Not sealing the bottom edges of the house wrap can lead to air leaks.
Is it OK to use two layers of Tyvek?
So if you put up two layers of Tyvek then it might become too much of a vapor barrier. This can trap water inside the exterior wall of a house and cause all sorts of moisture related problems. Better to use just the right amount of Tyvek.
Do you staple house wrap?
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.
Do house wraps go before Windows?
Installing the house wrap after the windows means that it’s impossible to shingle it properly. Here’s what you want your house wrap to do around windows. Notice that the house wrap comes over the flashing tape at the top of the window.
What is the point of house wrap?
The main purpose of using a house wrap is to prevent the entry of moisture into the wall cavity from outside. While it’s water-resistant, a house wrap typically isn’t water impermeable or waterproof. If the house wrap becomes impermeable, it can lead to rot and mold growth in the wall cavity.
Do you have to use Tyvek under siding?
There are no specific laws or building codes requiring homeowners to install house wrap behind siding. So, in a way, you can get away with not wrapping your house in a protective waterproof barrier. Some homeowners wrongly believe they can save on costs by skipping house wrap when installing vinyl siding.
How much do you overlap Tyvek house wrap?
The Tyvek® WRB should overlap through wall flashing by a minimum of 6”. Terminate the Tyvek® WRB at the bottom of the wall with 3” DuPont™ Tyvek® Tape, or DuPont Self-Adhered Flashing Products.
What do you cover Tyvek with?
Use Tyvek tape or a sealant product vetted for Tyvek to cover any areas that require additional protection, forming an airtight seal. Be sure to apply tape or sealant to the following areas: The entire outline window openings except the sill (base). Vertical and horizontal seams where Tyvek rolls overlap.
How do you seal the bottom of Tyvek?
Seal the the Tyvek® WRB at the interior foundation using DuPont™ Residential Sealant (or recommended sealant), DuPont™ StraightFlash™, or DuPont™ Flashing Tape. When sealing directly to concrete, wood, or other rough surfaces using DuPont Self-Adhered Products, use DuPont™ Adhesive/ Primer (or recommended primer).
What is the R-value of Tyvek house wrap?
Use Tyvek® HomeWrap® weatherization system underneath your siding, stucco or brick. The average wall has 3-1/2 inches of insulation which, under ideal conditions, has an installed R- value of R-14.
Which side of Tyvek is waterproof?
What is the difference? A: The two sides of Tyvek® are a little bit different. The smooth side is the “front side” and the rough side is the “back side” (which can be identified by comparing the two sides). Most physical properties such as water resistance, strength, etc.
Does it matter which way Tyvek faces?
Tyvek® HomeWrap®, Tyvek® StuccoWrap®, Tyvek® DrainWrap™ and Tyvek® CommercialWrap® are equally effective in both directions and the logo may be on the inside or outside.
Do you tape the bottom of a window?
Using rubberized flashing tape, flash the base of the window rough opening from the window frame down over the WRB. Make sure that the piece of flashing tape is 6 to 8 inches longer than the bottom of the window rough opening. Cap staples may also be used to ensure that the flashing tape is held in place.
Does Tyvek go over flashing?
Lap Tyvek® WRB over all flashing (e.g. step flashing, wall to roof intersections and through wall flashings).
