Width

Contents

Weight/Roll

Rolls/Pallet

Pallet Size

48"

1000 sqft

25 lbs

25

43" x 43"

Width: 48"     Contents: 1000 sqft     Weight/Roll: 25 lbs     Rolls/Pallet: 25     Pallet Size: 43" X 43"

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Engineered to Breathe

Breathex is a line of synthetic breathable roofing underlayments which allow water vapour and moisture to escape from beneath, while keeping water out. Breathex Pro, HAL’s latest innovation in the Breathex line, is our most technologically advanced breathable roofing underlayment yet.

HAL has a proud history of innovation and Breathex Pro is no exception, maintaining a dry and healthy deck with its state-of-the-art breathable technology. It has a class leading walking surface and an all new high strength three-layer construction, making installation safer and easier.

Physical Data Value Test Method
Weight 25 lbs
Width 48 in
Length 250 ft
Tensile Strength
Machine Direction 96.7 lbs/in ASTM D5034
Cross Direction 60.3 lbs/in ASTM D5034
Tear Strength
Machine Direction 35.43 lbs ASTM D4533
Cross Direction 22 lbs ASTM D4533
Resistance
Water Pass ASTM D4869
UV 6 months ASTM G154
Permeability
MVTR
20 perms
ASTM E96-A
MVTR
10 perms
ASTM E96-B
Conformance
Meets the Performance Requirements of ASTM D226
Meets the Performance Requirements of CSA A123.3

Engineered to Breathe

Breathex is a line of synthetic breathable roofing underlayments which allow water vapour and moisture to escape from beneath, while keeping water out. Breathex Pro, HAL’s latest innovation in the Breathex line, is our most technologically advanced breathable roofing underlayment yet.

HAL has a proud history of innovation and Breathex Pro is no exception, maintaining a dry and healthy deck with its state-of-the-art breathable technology. It has a class leading walking surface and an all new high strength three-layer construction, making installation safer and easier.


History of Innovation


For decades, roof decks have been protected by roofing felt placed beneath shingles, shakes, and other types of roofing. Roofing felt is a naturally breathable sheet which allows humidity and moisture to escape from beneath it.

We looked to our industry leading line of roofing felts for inspiration when designing the original Breathex, and our breakthrough synthetic roofing underlayment product proudly carries on the proven tradition of breathability. While most synthetic underlayments can’t breathe, our Breathex membrane technology is engineered to breathe, preventing water from being trapped against the roof deck while still maintaining a solid waterproof barrier from rain and leaks.

Breathex is the first modern underlayment technology with no compromises. It brings with it all the benefits of tradition but is made of truly cutting-edge synthetic construction.

Breathex Pro is the next step in the evolution of roof protection. With Breathex Pro, we improved our original Breathex coating and created a new product with unparalleled uniformity and uncompromising quality. We added a third layer of spunbonded polypropylene for greater strength and reliability across all job sites.

MAINTAINING A DRY AND HEALTHY DECK

Diagram with text and visuals. Visual: Layer of shingles. Below, a roll of Breathex Pro overlaid on roofing surface. Vapour rising from below roofing surface (symbolized by arrows and text) is depicted as passing through the breathable Breathex Pro roll.

Attics can collect a steady flow of humid air from active living spaces below, and often through roof vents during repeated dewpoint morning. This humid air can raise the absorbed moisture content of roof plywood to a level where unhealthy mold growth can occur, especially if the moisture can’t escape from the upper side through a breathable underlayment.

The hydrophilic coating on Breathex Pro will absorb water vapour molecules from the roof deck below and release them to the shingle interface above where sun and wind action can disperse them each day.

Boot Footprint

Class Leading Walking Surface

The top side of Breathex Pro is formed out of nonwoven, spunbonded polypropylene fibres, textured so that rain or shine, Breathex Pro has a secure walking surface. This high-friction surface gives your boots plenty of traction, and when combined with proper footwear and fall protection, it provides a safer installation environment. Breathex Pro's walking surface is strong, durable, and specifically designed to give your feet excellent grip.

Boot Footprints
 

Breathex Pro

Installation guide + Specifications

Breathex Pro Installation Guide

Breathex Pro Brochure + Specifications