"Gorilla screws"?

These are probably the same thing.

Richard

They'd be happy into block walls, sans plugs? How much load would you trust 'em with?

I got some masonry hex. head screws from my local fencing supplier to bolt down some post sockets to a concrete drive and I got to say they are solid. I do think that they are a tighten up once device though and will not stan d up to too much screwing and unscrewing although although I managed a litt le adjustment owing to packing the sockets out to compensate for a slope in the drive. Hex head are best as you can use a socket to drive them if you need the countersink use the torx type if you buy them by the box they ofte n give you the right driver.

Richard

Beauty with a plug is the screw can be removed and replaced. I doubt it applies to these?

What job would make it impossible to use plugs?

I've used these, but with pilot holes. They are a sort of poor man's Multi Monti.

There's no doubt you can make very secure fixings with steel objects banged straight into concrete, but you need a Hilti Gun to do it. Personally, I would have little faith in something which you bang in by hand using a hammer. Traditional masonry nails work OK on some materials, but I havn't used them for many years given the convenience of cordless hammer drills, and the more or less guaranteed performance of frame fixings or screwed fixings with or without plastic plugs.

Newshound I think you are thinking of something else, the linked screws do require a pilot hole but certainly do not need to be hammered in they screw in without any hammering. When my mother had uPVC windows fitted they fixe d into the brickwork with masonry screws and the brickwork at her place is hard but the fitter easily drove them in with a battery drill.

Richard

In message , "Dave Plowman (News)" writes

Probably not many. But these speed up installation and time is money, it's someone else's problem after the job is signed off............

Well if Gorillas did not screw, they would soon be extinct I say... :-)

Brian

Not "impossible". Just "easier".

Very little to none.

Obviously it depends on the blocks, but I found that if the block was soft enough to screw them into, it couldn't hold them.

Mike

Ta. I think my mind's settled on it. Plugs it is.

Sorry, yes, I know these need screwing. I didn't make my point well, I was just trying to say that these are *not* the "hammer straight in" ones.

Yes indeed, screws straight into brickwork are used extensively by window and door fitters because they are so quick.

It true that you can't get them out very easily - but in the "old" days wooden door and window frames were held in by bl**dy great nails which were also pretty difficult to remove!

Depends on the budget, but when a similarly sized house next to my home in Twickenham was refurbed they put in three ordinary boilers, one for each floor. Makes zoning easy, servicing and parts should be easier and if one boiler fails there's still heating in part.

Be warned they need an exact size drill .. which are usually pretty expensive. Been used by uPVC windows trade for decades.

They other 'similar' bang it in approach are frame fixings ... depends what you are fixing.

If you need it to take a decent load then use Thunder Bolts ..

Multi Monti can be removed and replaced (but I wouldn't want to do it many times). Where they come into their own is if you need a solid fixing relatively close to the edge of brickwork. You can certainly apply them closer than you could safely using plugs.