Deciding on the best Kind of Wall Finish
This can be the base coat that is definitely gently scratched whilst the plaster is still wet to create a great key for that second layer of plaster - the ‘skim' coat - to bond to.
Together with cement-based and gypsum plasters, lime and clay plasters are favoured by most traditionalists and individuals wanting a wall that may breathe. Lime and clay plasters are higher priced than ‘conventional' wall surface finishes and it's also smart to just use a plasterer with expertise in such materials.
SMJ Plastering
Something to be aware of though: if you are intending on using the manner of wet plaster by using an exterior wall, do do not forget that you won't have the ability to add insulation as you're capable of with plasterboard - except in instances where that you are content to utilize external insulation on your own home. So, for those who have got solid brick walls - rather then cavity walls - you should think about the result that a lack of insulation can have.
Pros
Has an even, hardwearing finish
Suits traditional properties perfectly
Uncomplicated to make use of around tricky areas by way of example windows and doors
Offers outstanding airtightness and soundproofing
Cons
Cannot add insulation internally behind this particular plaster
Takes more time to dry out in comparison with various other techniques
Hairline cracking might appear
High capability is very important - a skilled plaster is often tricky to encounter and definitely will frequently request more just for this particular style of work.
Plasterboard with Skim Coat
There is a few regular board thicknesses of plasterboard - 9.5mm for 400mm spacings and 12.5mm for 600mm. Additionally, there are several different ways wherein plasterboard could be fixed to your wall: ‘dot and dab' or ‘board on dabs', and plasterboard which is screwed to timber battens fixed into the wall.
With dot and dab, sheets of plasterboard are stuck to either brickwork or blockwork walls using dabs of adhesive and leaving simply a small cavity between plasterboard plus the wall. Using the batten method - perfect for all planning to add insulation to the solid wall - timber battens, generally measuring 38mm wide and having a depth to fit the thickness of insulation you will be choosing between them, are screwed to the wall.
Rigid board PIR (polyisocyanurate) insulation is then inserted between battens before the plasterboard is defined over the top. A vapour control layer is additionally needed in the matter of solid walls.
Finally, the joints in between the boards are engrossed in scrim tape - typically by means of a self-adhesive tape - before a skim layer of plaster is trowelled to the plasterboard.
Pros
Hairline cracks - which are generally linked to wet plaster - are improbable
Quicker drying out time
Possible to handle over a DIY basis
Insulation may be fitted behind plasterboard
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