Discover mother nature's worst nightmare: OSI QUAD MAX. Acting as the first line of defense against the elements, OSI QUAD MAX (1868684) Window, Door & Siding Sealant delivers the toughness needed to make a job last. Designed for sealing around exterior/interior windows, doors and siding, QUAD MAX is a paintable caulk that bonds to a wide variety of materials such as fiber cement, cedar, brick, stone, coated aluminum, fiberglass, vinyl, PVC, stucco, EIFS, wood, glass, and flashing tapes and Kynar coatings. With proven wet and cold surface application and enhanced resistance to UV and hot and cold weather, OSI QUAD MAX is the versatile and durable caulking choice for professional contractors. OSI QUAD MAX has a fast 24-hour cure and can be painted in 1 hour (dependent on temperature, humidity, and depth of sealant applied). The best window, door and siding sealant OSI offers, QUAD MAX is flexible with 5x stretch and Class 50 Joint Movement capability so you have zero reasons to worry about a job once you've done it right the first time.
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out of 211 reviews
84%recommend this product
Showing 1-10 of 211 reviews
Mar 24, 2022
Junk caulk cartridge
I only review products when I love them or hate them. The plunger on the bottom is poorly designed causing bad leaks. This is a 5 star product if they didn't reinvent the wheel. I love the original Quad, but when I went to change out my first cartridge, I had a mess everywhere. Figured I had a defective tube. Cleaned it up the best I could, and went through another. Once again a huge mess. Thinking I had a issue with the gun I got my backup and another mess... now I'm really not happy. I checked the the bottom of the tube. They came up with a messed up type of plunger that doesn't put pressure evenly on the bottom and blows out
Response from OSI - Henkel CorporationMar 24, 2022
We are sorry to hear about your experience with OSI QUAD MAX. What you described is not characteristic of this product. Please be assured your comments have been passed on to those directly responsible for the sale and manufacturing of our product.
Oct 12, 2021
Builder used it on our house to chalk the concrete siding - I used it same way on the matching She-Shed. Really tough stuff - would have no problem using in place of construction adhesive its bond is so strong. Using it now for another shed.
Response from OSI - Henkel CorporationOct 13, 2021
Thank you for the nice review on the OSI QUAD Max Window Door and Siding Sealant. We are glad you are happy with it. Please let us know if we can ever be of assistance. -The Henkel/OSI Team, 1-800-624-7767
Feb 18, 2020
A little expensive, but worked great! Water was leaking around an intrusive pipe that comes thro...
A little expensive, but worked great! Water was leaking around an intrusive pipe that comes through a poured concrete wall.. Used this sealant to seal the intrusive pipe. Easy to use, no more water seeping into my work room! Yea!
1 found this review helpful
Oct 4, 2017
when you get it out of the tube it does what it says 3 out of 12 unusable... broke seal but would...
when you get it out of the tube it does what it says
3 out of 12 unusable... broke seal but would not flow out except from the bottom... ruined caulk gun
definitely for pro use only... unless you like working with marshmallow cream like sticky mess that can only be cleaned up with mineral spirits
3 found this review helpful
Dec 11, 2016
We inherited a caulked deck (never wouldn't have caulked if I'd built it myself...!). Not too pr...
We inherited a caulked deck (never wouldn't have caulked if I'd built it myself...!). Not too pretty now, but this repair will get us through the winter, and then we'll finish stripping the paint next spring and stain the deck. The space below is staying dry so far. Fingers crossed! Strongly advise using a power caulk gun to apply, as it's stiff and thick.
1 found this review helpful
Feb 5, 2022
Feb 3, 2022
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
Response from OSI - Henkel CorporationFeb 3, 2022
Thank you for choosing OSI for your project!
Jan 18, 2022
Jan 8, 2022
Best calking ever. Wear an old leather glove to smooth out. Clean up with paint thinner.
Response from OSI - Henkel CorporationJan 10, 2022
Thank you for taking the time to leave a positive review! We are glad you are happy with our product.