Why does caulk shrink and how can I avoid it?

  You just applied the perfect caulking bead. It was even with the surface. You even outlined the joint with painter’s tape to make sure it looked clean when done. Now, a couple days later, the caulk bead has gone concave. It’s the incredible shrinking caulk! What happened? Have no fear: shrinking caulk is actually a good thing. Shrinking Caulk = Better Performance Fact is, shrinking caulk is a sign of good elasticity. In order to achieve that elasticity, fewer fillers are used. Those fillers are great for creating a nice,... Read More

Through the Roof vs. Roof Asphalt and Roof Cement: Which Is Better?

It’s a bold claim: Sashco’s Through the Roof!® lasts at least 20 times longer than roof asphalt and roof cement. The roof asphalt guys don’t really like to hear it, but laboratory tests prove it. (Read on to see what we mean.) Plus, Through the Roof!® just looks better. It’s crystal clear so your roof looks like a roof after repairs instead of a field of patches.   The lab test results left no room for argument. In accordance with ASTM C793-05 – Laboratory Accelerated Weather on Elastomeric Joint Sealants... Read More

How to Smooth Lexel and Through the Roof! Caulking

We hear you: Lexel® and Through the Roof!® are sticky. Sticky isn’t all bad – like when it sticks to the surface you’re sealing and doesn’t let go! – but when it’s all over your fingers, making a stringy mess? Yuck. Here are some tips on how to to smooth Lexel® and Through the Roof!® caulking to keep your fingers and clothes clean and your caulking projects frustration-free. (HINT: These tips apply to silicone, too…but as you can see here, Lexel® is far superior to silicone.) 1. Find your smoothing tool.... Read More

Lexel: The Clearest Clear Sealant vs. The Other Clear Sealants

When it comes to caulks and sealants, what does “clear” usually mean? For most caulk makers and users, “clear” usually means cloudy, or slightly white, or sickly gray. Rarely does it mean what people are actually looking for: something that you can look through that doesn’t skew what’s on the other side. (Think of a window or plastic wrap.) What does clear mean on a Lexel® sealant cartridge? It means a rating of 6 on the NTU scale. Pure, filtered water is rated a 0 on the NTU scale. We mean clear,... Read More

Can I Use Through the ROOF! On Existing Roof Repair Products?

Does this sound familiar? “I have sealed this same leak four times with roofing tar and each time, the leak returns.” You’re not alone. You want something to seal that nagging roof leak, but don’t want to spend even more time removing all of the other roof repair products you’ve already used. Good news: no need to remove existing roof repairs! Sashco’s Through the ROOF!® will stick to and seal over a variety of existing roof repair products, including: Asphalt Roof cement Bitumen products EPDM rubber* Most roof sheet coatings And... Read More

Which Sashco Caulk is Best with Flashing Tape?

  Keep the weather where it belongs: outside! That’s the job of both Sashco’s caulks and sealants and flashing tape (also called self-adhered flashing).Both are designed to work in concert with various building materials to create an air- and water-tight barrier that keeps moisture out and peace of mind intact. Where and how is flashing tape used? Flashing tape is installed to both the rough opening of a window or door, as well as after a window or door has been hung in place and secured with fasteners. This is done... Read More

How Water-Based Caulk Dries

Rain and humidity and my caulk won’t dry – oh my! The United States experienced the wettest May on record in 2015. All of that rain was great for flowers, trees, and weeds. For some, it created another problem: caulking that took a lot longer than normal to dry. Why? How do water-based caulking and sealants dry (aka cure)? The short answer is: by evaporation. (Here is a quick trip back to elementary science for a great explanation.) The combination of wet weather and the accompanying cooler temperatures creates an abundance... Read More

Banish That Crack: Slab® Fixes Ugly Concrete Cracks

Step outside and you’re likely to see a concrete crack in less than two seconds flat. They’re in driveways, sidewalks, patios, garages, as well as basements, and it’s these unsightly cracks that allow weeds and insects to flourish. Enough is enough! Take back driveways and sidewalks everywhere with Slab®: The Serious Fix For Concrete Cracks. “We’ve had our fill of ugly concrete cracks,” says Sashco President Les Burch. “There is hardly a driveway or sidewalk without them. It’s time to fight back, America! Slab® helps everyone easily fill those cracks... Read More

Choosing the Right Product: Sashco’s Slab vs. Mor-Flexx

It can be confusing to choose the right caulking product when they have a lot in common. Say you have a concrete crack in your sidewalk, and a crack in your stucco near a window. Sashco makes two great products, both made for these textured surfaces. So which one should you use? The answer is both. Yes, Sashco’s Slab® and Mor-Flexx® have some similarities: They’re both for textured surfaces. They’re both easy to apply. They’re both easy to clean up with water. They’re both safe through 10 freeze-thaw cycles when... Read More

The Many and Unique Uses of Lexel®

Sashco products have been used for many things over the years, but none as storied as Lexel® uses. A friend of Sashco asked this question: “An Irishman walked out of the bar? Well, it could have happened. The real question: Will any Sashco product seal the crack in my stein?” Indeed, many Sashco products are great for random stein cracks, amoungst other things. In particular, Lexel® has been used in a variety of interesting applications. Its superior adhesion to a ridiculously wide array of materials, as well as its unmatched clarity, makes Lexel® perfect for both normal,... Read More