If fixing to a dot & dab wall, am i just best using longer screws, then push rawl plug into blocks/bricks on other side?
Depends what you are fixing to be honest. Always a bit hit and miss on D+D. Depends on depth of void. Depends on whether you need to fix where there is a dob. Generally if its a void and its a lightweight fix, then a spit spiral fixing will do. If you hit a dob and its lightweight fix then a 6mm hole and a brown plug and say a 60mm screw will do. If its a heavyweight fix then say a 100mm screw into bricks/blocks will be required.
Well to hang a TV ( 26") and large mirror (heavey) and curtain poles. No guarantee a dot will end up where needed. ( hate dot and blinking dab). So am i best with 8mm rawl and 100mm screws?
100mm screws, brown plugs, if you really really are struggling for a fix cut out a square of plasterboard neatly, PU glue and screw a square of ply or 4x1 in the hole, refit the plasterboard then screw into that.
Another option to consider is these specialised D&D fixings; https://www.bing.com/videos/search?...&qpvt=corefix+dot+&+dab+wall+fixing&FORM=VDRE Really depends on weight of items to be hung and I guess how many fixing points are available Possibly slightly over engineered but, at least another option and no cutting out, making good after Another brand but basically same item is 'Dryline Pro'
Dryline does not have the steel cylinder core that helps to transfer the weight to the masonry wall. Corefix seems better because of that. I plan to use them to mount 30kg radiators to the walls.
You haven’t got 100mm of screw going into plug though have you Take off the following; Thickness of item being fixed Approx 3mm plaster skim 12.5mm plaster board D&D gap - could be anything really, 25-50mm Approx 50mm (ish) going into wall and plug Drill correct size hole depth and size through PB into wall Push plug into PB, couple turns of the screw by hand then push plug through PB ans into hole in wall Light tap with hammer to drive plug into wall using screw Remove screw and fit item
Why ? Plastic plug filling gap between wall and PB doesn’t offer you anything That’s what steel sleeve on Corefix offers, yes your paying for this but what price in piece of mind If you overtighten screw into plug and you have a void behind PB, you run risk of PB deflecting and either PB and/or plaster cracking Again Corefix stops this chance Anyway, just an option
100mm screws with brown plugs will be fine. Angle the drill downhill slightly to create a hook effect.
You can't have everything, no point having the plug flush with the plasterboard if it's just a void behind. Push a second plug in deeper if you're that worried, or drill a 10mm hole and hammer in a dowel with a bit of PU glue, loads of ways.
Sometimes fixings can be overcomplicated. I pretty much use 3 types. Spit spirals for plasterboard Suitable screw and brown plug for bricks/blocks etc Multi montis for frames, casings and linings.
We also don’t know what wall is built from so even with the best fixings, getting a good hold in lightweight blocks can be a pain Often you’ve only got 1 shot at getting a good fix from each hole as can’t move item over if wall crumbles
Which is why I'm confused with Dryline Pro as it's just a long wallplug and long screw without the steel core.