Who It's Built For

Built for the Pros. Perfect for Homeowners.

Home Builders

Spec it in every build. Protect your reputation and the structure.

Contractors

A finishing detail your clients will notice for decades.

Home Owners

Stop drafts, lower your bills, and protect your floors — permanently.

Black sliding patio door opening onto a stone patio and a bright kitchen interior

WHY CHOOSE WEATHERBLOC PRODUCTS?

They offer a 15-year shelf life on all their advanced energy saving sealing products vs. 1 year with other manufacturers

A FIRST IN THE BUILDING INDUSTRY

Proven Outperformance in Lab Testing: WeatherBloc’s Micro-Grab Hotmelt Adhesive outperformed all standard industry adhesives, including acrylics.

Featured Products

Our Most Sought-After Products

ThresTite WeatherMax Seal Plus logo

ThresTite WeatherMax Seal Plus

Blocks 99.9% of air and moisture under doors.

From $15.49

Buy Now
XTREME Weather-Flash Alaskan Grade logo

XTREME Weather-Flash Alaskan Grade

Flashing tape that seals cold, wet surfaces. No primer required.

From $18.97

Buy Now
WIC-DRI Drainage Guard logo

WIC-DRI Drainage Guard

Drains water out of window openings. Mold and mildew resistant.

From $43.55

Buy Now
WEATHER-MAX Pro-Flash logo

WEATHER-MAX Pro-Flash

Flashing tape that seals wet surfaces with no primer.

From $17.49

Buy Now
WrapidPan Windows logo

WrapidPan Windows

Window pan system with built-in drainage and no caulk.

From $21.98

Buy Now
ELASTO Stretch Flash logo

ELASTO Stretch Flash

Stretch flashing that seals window sill corners.

$49.95

Buy Now

WE ARE HERE TO HELP

Building plans for a free plan takeoff

Free Blueprint / Plan Takeoffs

Custom manufactured sealing products

Custom Sizing / Manufacturing

New WeatherBloc products and announcements

Coming Down the Pipeline

Free Blueprint / Plan Takeoffs

Submit your plans (PDF preferred) and we can provide an accurate material takeoff and custom volume discount pricing.

Custom Sizing / Manufacturing

If your project needs a specific size or width, in most cases we can custom manufacture exactly what you need at high-volume discount pricing.

Coming Down the Pipeline

We are in the final testing stages on several key sealing products featuring an unprecedented 15-year stable shelf life to combat ever-rising utility costs. Check back regularly for official release updates and technical specifications.

Testimonials

What People Are Saying

“As you know, I been involved in the construction industry supplying an array of products to thousands of contractors for over 40 years. And you know I am a stickler when it comes to moisture infiltration that is destroying our homes. I know firsthand that a lot of it is do to poor quality sealing products that just do not seal properly especially when we start running into inclement weather conditions. To be an effective tape it has to stick to the wall so well that water can't flow under the tape. If it doesn't stick, it is worthless. Your flashing tapes are the most effective air & water barriers I have ever used and sold, and your tapes stick better than any other tapes I've ever tried. Good job, thanks, John R.”
John
Supply House Owner
“Just want to THANK the Weather-Bloc team for their quick response in getting product to us. Your products are of great quality and our Tech's use your pan system on every door install. We have been now using this great product for over 6 years and will continue to be ordering it to prevent any future problems and leaks which hasn't occurred since using your pan system. Thanks, Holly”
Holly
Warranty / Service Company
“Hi Todd, good news and want to let you know I just got my Architect to spec the Energy Sill Sealer and new client to use it on their house that I will be starting to build shortly. After I showed them the test results I got back from a rater that did a blower door test on a previous house I completed which scored a phenomenal 0.36 ACH, they were extremely happy that I told them about the Energy Sill Sealer. The rater said it is the best score he has ever seen in doing over 8,000 test. I love the product and know it was a part of scoring such a awesome rating because I never got that great of a rating before I used your product. FYI: I will be promoting it to all my future customers and show them the huge benefit they will get using this product. For the money, no other product offers more energy savings. Thanks Eric.”
Eric
Passive/Energy Home Builder
“WeatherBloc is a system that provides an air and moisture block between your foundation and floor system. If you visit their website, you will see that it helps reduce your energy consumption, helps protect your home from moisture and decay, and reduces air and water infiltration by 100%. The reason this is of particular importance to us is that we are building a non-vented conditioned crawlspace, and it is important we minimize the amount of water vapor that could potentially enter that area. According to Landus, there are many products on the market that do this, but he feels WeatherBloc does it the best. The adhesive is applied to the wood so it does not move around during installation.”
Landus and Martha at Work
Product Reviewer

Can't decide which product best fits your application?

Call us, we are here to help.

414-375-8101
WeatherBloc team member helping a customer with a sealing product
Number 1 Rated badge Number One, Products Proudly Manufactured in America logo

Wisconsin-based manufacturer of premium building envelope products designed to permanently block air and moisture infiltration and protect homes and structures from the inside out.

(414) 375-8101

[email protected]

CONTACT & HOURS

(414) 375-8101
[email protected]
11311 W Forest Home Ave, Franklin, WI 53132
Mon-Fri: 7:30am-4:30pm CST
Sat: 7:30am-12:30pm CST
Sun: Closed

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