Using Strait Flex Crack Repair Tape To Repair a Drywall Crack

Crack Tape

Strait Flex sent me a bunch of samples to try out. One of the products was call Crack Tape. And I just happened to have a few cracks needing fixing, so I thought I would give it a try. If you read my article on repairing drywall cracks that occur at the corners of windows and doors, you find that I am not too optimistic about any type of retaping holding up. Rather, I advocate removing drywall and putting up new pieces so there is no joint at the corners. But, this Strait Flex product is advertised to have 10 times the strength of regular paper tape. So maybe it would hold up?

I repaired one crack by simply taping over the top and then overcoating and feathering out the repair. Since this tape itself is a bit thicker than paper tape, it raises the surface a bit, which is never a good thing. But, on the other hand, this Strait Flex is a stiff non-paper composite material that is sand-able. So unlike paper tape, if you happen to sand down to the tape it is not as detrimental. My repair came out nice and is shown below.

I repaired another crack by using the drywall crack repair method shown here, but instead of using paper tape, I used the Strait Flex crack repair tape. The repair went well, and I would expect that the repair would hold up better in this high-stress area than regular paper tape. Another feature of this tape, besides being much stronger, is that you place the tape on, imbed it, and then immediately place a coat over the top. This allows a continuous coat to pass through the holes of the tape, giving it that much more strength. And since this tape is fairly stiff, I had no problems with snagging the tape by immediately overcoating. Check back at this site in 5 years or so to see how well it held up :)

You can order this product or other Straitflex products at the Straitflex website.

Going Over The Top of a Crack

Going Over The Top of a Crack

Removing Old Tape First

Removing Old Tape First

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4 Responses to “Using Strait Flex Crack Repair Tape To Repair a Drywall Crack”

  1. Your step-by-step instructions as to how to PROPERLY fix a stress crack was invaluable! Thanks so much. But I’ve one question: Followed your links to Strait Flex’s website and clicked on the 100′ roll of their Crack Tape and saved it on my desktop. When I clicked back on it, I got “This product is no longer available”. Whut? Considering your entry and very helpful pics re using the tape and repairs was only dated a few weeks ago (Oct.09), I have to ask: IS THIS PRODUCT STILL AVAILABLE OR NOT? AND IF SO, CAN I ORDER DIRECTLY FROM STRAIT FLEX OR ONLY PURCHASE THROUGH LOCAL DISTRIBUTORS?

    Thanks so much again for your instructions and advice. I need all the help I can get. :(

  2. I just checked, just now and it appears to be available? Check again. If that does not work try to contact the company on this.

  3. That is a tough question! The permanent repair works, but it takes a lot of time. I would opt for the permanent repair if I needed another outlet – it would be a good opportunity to put one in. I guess I won’t know for sure whether the crack tape will hold up for the long haul until a few years from now. So far the crack tape has held up on the crack repairs I made below my window and above my door and we have had a fair amount of sub-zero temps. But that is just one year. Typically it takes a few years for the cracks to form.

  4. Mr. Drywall Expert – great website – solid, common sense advice!

    I have a crack that has appeared along a seam between two sheet rock panels on the ceiling of my master bathroom. One end of the crack teminates along the edge of a recessed vent fan/light assembly cowling and the other end teminates at the edge of a half wall that seperates my shower enclosure from my garden style bathtub surround. I’ve already tried to repair the crack and it didn’t work out. During an inspection of the space above the crack I discovered that my home builder construction crew failed to install a cross brace above where the two sheetrock panel edges join together. This should have been done to allow the two panels to be secured to a common surface. Without the cross brace the two panels strattle two roof trusses that are perpendicular to the crack. I installed a wooden cross brace in the attic space above the crack that consists of two pieces of 2×4 secured together by nails 16 penney nails. The cross brace is the width of two 2X4′s and I cut them to fit properly between the two roof trusses; each end of the cross brace was secured by screws. Back down in the master bathroom, I secured the adjoining edges of the sheetrock panels with sheetrock screws so that it would draw up both sides of the crack evenly. The first time that I tried to repair the crack I applied joint compound and tape directly over the crack after I sanded the surface to expose the crack. Incidentally I didn’t realize the tape was supposed to be wet with water prior to applying it to the mud and the next day I discovered the tape had lifted away from the surface. Rookie mistake – won’t happen again!

    I want to try resealing the crack using your documented methods however my situation is slightly different than the one you described because the crack I’m trying to repair doesn’t appear to have any joint tape that was applied when the sheetrock panels were originally installed. I could be wrong about that but that’s how it appears to be upon close inspection. So, what I presume is needed is for me to peel back the paper backing of the sheetrock panels prior to conducting the repair. I’m not very confident that stripping back the paper cover on the sheetrock is going to end well. I want to complete the repair on my own but I would really appreciate some professional advice before I make a complete mess out of a simple 16 inch long crack. I can send you detailed pictures if you want them. Just let me know where to email them to in a private message. If you need more information about the materials that I’m using, please ask and I’ll email a list to you promptly.

    Thank you in advance for your advice and expertise!

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