Hey everyone! I've got a unique situation with my wall. It used to be part of the building's facade and now has a thick plaster layer and about 8cm of EPS insulation. I recently bought some 14cm long M10 plastic anchors to mount my pull-up bar, but I hit a snag when drilling. The EPS is soft, but once I hit the bricks, the drill went through way too easily. Turns out, there's a gap between the EPS and the bricks, which are hollow with thin walls and holes over 10mm wide. This makes it tough to secure the anchors. I tried screwing in the bolts but one anchor slipped right out when tested. I'm considering using a chemical anchor, but I'm worried about removal later on. Is there a better option? I thought of filling the holes with plaster and drilling again, but I can't find the right tool for that. Any suggestions? Thanks!
1 Answer
Have you thought about using toggle bolts? They can provide a solid grip in hollow spaces since they spread the load over a larger area. Just make sure to pick ones rated for heavier weights to support both your pull-up bar and your body weight. Check the specs before buying to ensure they can handle the load!

I checked some local shops and found toggle bolts, but they’re M4 or M5 and 90mm long. I’m skeptical about their weight capacity—only one shop listed it at 15lbs, which won’t work given my pull-up bar weighs about 22lbs, and I’m around 200lbs. Are toggle bolts really reliable for heavy lifting?