Can I fix interior wall cracks myself before repainting?« Back to Previous Page

Hey there, neighbor. I'm based in Dubai and deal with this exact issue all the time, especially with the thermal expansion and contraction our villas go through. For the hairline cracks you're describing around the window frames, a DIY fix this weekend is absolutely doable if you're moderately handy.

Here's the proper sequence of steps involved. First, you need to slightly widen the crack with a utility knife or a can opener to create a 'V' groove; this gives the filler something to grip onto. Next, vacuum out all the dust and debris—this is crucial for a good bond. Then, apply a high-quality, flexible acrylic filler or elastomeric sealant, which is designed to move with the building. In Dubai's heat, using a standard rigid filler is a mistake as it will just crack again. Smooth it flush with a putty knife, let it dry completely according to the product instructions (this is key!), and then sand it smooth.

However, a major word of caution: if those cracks are wider than a credit card, or if you see signs of moisture staining or the crack is diagonal and running from the corner of the window, that could indicate a more serious structural or water ingress issue. In that case, a DIY patch is just a cosmetic cover-up. For peace of mind, especially before external works begin, a professional inspection is wise to rule out any underlying problems that the repainting vibrations might aggravate.

If you're unsure at all, it's best to get a pro to take a look. You can call our team at 800-MOLDS for a quick consultation. We can advise if it's a simple fix or if it needs a closer look. Good luck with the painting