100 Pcs Easy Fix Washers, 35mm Diameter Galvanised Steel Fixing Washers for Insulation Thermoboard Backer Boards (100)

Good price, quick delivery and worked as expected

They do the job, but they are a bit thin. As long as you don’t drive the screws in to far they work fine

I used these as I had run out of the fixings I bought with the backer board and felt I needed more support. They don't come with screws as did the original fixings but I used them with plasterboard screws which I always have around as they are corrosion proof. They give a good area of support and don't crush the backer board as much as the original fixings. They are also a lot cheaper even if you take into account the cost of the plasterboard screws.

These are the correct diameter size for insulation panel fitting but are clearly thinner and more flexible than OE and buckle very easily. This is very undesirable but if installed with care can do the job barely. Therefore DIY ok - trade No.

I used these recently to fix PIR insulation boards to rafters and walls on an extension. Worked a treat. I’m sure they will have multiple uses but for insulation work the are brilliant.

Promptly delivered and well package.However,1. too thin to function well. Screws tore through the centre of the flange 50% of the time.2. They buckled far too easily leaving a sharp raised edge.3. Nothing to stop the flange spinning on the board4. Nothing to stop them spinning if you doubled them up as previously suggested.In summary, a poor quality and badly designed product. I would not buy again. In the bin.

Arrived in a well packed box. slightly bigger then expected but will do the task i have to board up the ceiling. Thanks

Bought these for walls but they are half the thickness and weight of the ones I bought in the tile shop ? ( made in china ) so had to use on the floor .