Typar

Typar makes weather-resistant barriers, flashings, tapes, and landscape fabrics for contractors who need materials that actually hold up in harsh conditions. The company specializes in manufacturing weather-resistant barriers and building envelope solutions designed to safeguard buildings from moisture and air damage.

Their product line breaks down into eight main categories: weather-resistant barriers (WRBs), building wraps, flashings, construction tapes, sealants, geotextiles, landscape fabrics, and roof underlayment. The flagship products include TYPAR HouseWrap for residential weather barrier applications, TYPAR BuildingWrap for commercial projects, MetroWrap building wrap product line, and Surround SR Roof Underlayment.

Building Wrap Performance That Matters

Typar’s building wrap features exceptional tear strength—five times greater than competing products. This isn’t marketing fluff. When you’re working in Montana’s wind conditions, wrap that tears during installation costs time and money. The wrap effectively blocks air and water infiltration while allowing moisture to escape, which helps prevent mold growth.

The technical specs back up the performance claims. With a vapor transmission rating of 11.7 perms, Typar hits the sweet spot between blocking wind-driven rain and letting wall assemblies breathe. Breaking strength tests at 67 lb MD (machine direction) and 73 lb CD (cross direction) — numbers that translate to wrap that won’t shred when the wind picks up during installation.

The product offers UV protection for up to six months of exposure and surfactant resistance. That surfactant resistance matters more than most contractors realize. Cedar siding, pressure-treated lumber, and even some housewrap tapes leach surfactants that can compromise water resistance in standard wraps. Typar’s advanced surfactant resistance technology using spunbond polypropylene-based filament fibers maintains performance where others fail.

Specification	Value
Breaking Strength	67 lb MD / 73 lb CD
Vapor Transmission	11.7 perms
UV Resistance	6 months
Hydrostatic Pressure	>500 cm

Butyl Flashing Systems Built for Temperature Extremes

Typar’s butyl flashing products handle the temperature swings that destroy lesser flashings. The 6-inch butyl flashing operates across an application temperature range of 30°F to 180°F — that’s installation flexibility when Montana weather won’t cooperate. At 0% VOC content, there’s no off-gassing to worry about in tight spaces.

The peel adhesion numbers tell the real story: 2.8 lb/in on OSB, 7.2 lb/in on plywood. Plywood gives better adhesion than OSB — file that away for critical details. The flashing self-seals around nail penetrations per ASTM D1970, which matters when you’re dealing with all the fasteners in window installations.

The Flex Flashing uses a 30-mil butyl rubber adhesive layer with a 25-mil HDPE facer for 55 mils total thickness. That’s beefy enough to bridge gaps and conform to irregular surfaces without tearing. The split-back release paper speeds installation — peel half, position, then peel the rest. Small detail, big time saver.

Flashing Type	Application Temp	UV Resistance	Key Feature
6” Butyl	30°F to 180°F	6 months	0% VOC
9” Flex	Standard range	Up to 6 months	55 mil total thickness
4” Tape	Standard range	UV and weather resistant	Multiple material options

Construction Tape That Works Below Freezing

Most tapes fail when temperatures drop. Typar’s construction tape maintains performance down to 0°F (-18°C). That’s the difference between stopping work in December or pushing through to close in before the real cold hits. With 35 oz/in peel adhesion per ASTM D903, it sticks and stays stuck.

The temperature range of 0°F to 230°F covers every condition you’ll face in Montana construction. The easy-tear edge means no hunting for a knife with gloves on — rip and stick. Both the 2-inch and 3-inch widths handle standard seaming, with the 3-inch giving better coverage for critical details.

Heavy-Duty Landscape Fabric

Contractor Select Plus at 2.5 oz per square yard comes in 50% stronger than standard Contractor’s Select fabric. This isn’t grocery store weed barrier. The spunbond polypropylene construction with UV protection handles Montana’s elevation and sun exposure.

Use it under pavers, patio stones, and walkways as a stabilization layer under gravel driveways. The high water permeability prevents the water pooling that causes frost heave under hardscapes. For soil separation in landscaping beds, it keeps decorative rock from disappearing into the mud after a few freeze-thaw cycles.

FAQ

How long can Typar building wrap stay exposed before siding installation?

Typar building wrap can remain exposed for up to 6 months before requiring covering. This gives you a full building season in Montana without worrying about UV degradation. Most competitors top out at 90-120 days.

What makes Typar’s surfactant resistance important?

Typar features surfactant resistance that prevents water-beading chemicals from cedar siding, treated lumber, and construction adhesives from compromising the wrap’s water resistance. The company uses advanced surfactant resistance technology with spunbond polypropylene-based filament fibers to maintain performance where standard wraps fail.

Can butyl flashing be installed in cold weather?

Typar’s butyl flashing has an application temperature range of 30°F to 180°F. You can install it down to 30°F, though adhesion improves as temperatures rise. The construction tape performs even better in cold, working down to 0°F.

What’s the actual tear strength advantage over competitors?

Typar building wrap features exceptional tear strength—five times greater than competing products. In real numbers, that’s 67 lb MD and 73 lb CD breaking strength versus the 10-15 lb range of budget wraps.

Does the landscape fabric really last under gravel driveways?

Contractor Select Plus is specifically engineered for sub-surface applications with 50% greater strength than standard versions. The UV-protected spunbond construction won’t break down under gravel, and the high water permeability prevents the pooling that leads to washouts and potholes.