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You are here: Proscreed/Technical

Proscreed Construction ProcessThe Floor Construction

Technical

The concrete baseStep - 1

The first process of floor construction is a good solid substrate or slab, most commonly It’s made from one pour of concrete either via a concrete transfer pump or straight from the concrete mixer. It’s crucial to get this slab level as it will make the installation of other materials on top the same depth and you will achieve uniform drying.

PRO SCREED UK deal with all the major concrete suppliers to provide the right strength concrete for your substrate. Placed either by the use of our concrete pump or concrete mixer we can achieve a level finish to ease the build up of insulation, underfloor heating & screed eliminating uneven floors through your property.

Floor preparationStep 2

The second and most important part of the floor construction process is the laying of insulation on your substrate, this should sit even without rocking and be tightly packed according to building regs. Where underfloor heating & flowing screeds are used, a slip membrane needs to be applied, a minimum of 500 gauge (125 mu), lapped up the walls by 150mm and taped securely to create a pond like effect, water tight to stop any flowing screed to escaping and getting underneath your insulation, if the screed does get under the insulation then it will all start to float.

A perimeter edging strip should be applied where underfloor heating is in place as to allow for any expansion through the warmed screed.

Underfloor heating - UFHStep 3

For years underfloor heating has never really taken off in the UK and has always been an expensive addition to any home, it’s the preferred heating choice in Europe. Gradually it started to get used more & more here driving the cost down significantly and is now just the same price as installing radiators but with better heating efficiency and reduced or virtually no cold spots.

PRO SCREED UK, deal with various Underfloor heating suppliers to provide our customers with a system that suits your needs, whether a single zone 2 port manifold or a top spec multi manifold system, all underfloor heating kits are installed by us and primed by our underfloor heating engineers.

Screed pumping & flowingStep 4

Flowing screeds are the perfect answer to a level floor finish, when used in conjunction with underfloor heating the liquid screed will be pumped over the underfloor heating pipes to fully encapsulate them leaving no air pockets, with the flowing screed being a gypsum based eco friendly product it will heat up very quickly and retain the heat longer reducing heating costs. a minimum depth of 50mm should be applied and no more than 70-75mm, where there is no underfloor heating the depth of screed can be as little as 30mm with a slip membrane under neath or 25mm where a liquid membrane has been applied allowing the screed to bond to the substrate.

PRO SCREED UK work along side various screed manufacturers throughout the UK and will always try to work with the closest plant to the work site, reducing travelling times and workability with the product.

Thin section & screed repairsStep 5

Thin section screeds are normally used to level up a floor without losing too much height, these can be where a concrete based is not level, to flatten off a rough or tamped concrete floor or to level up an old existing floor instead of taking that floor out, these thin section screeds range from 0-50mm and can be ready for foot traffic within 2 hours. Repair screeds are a cheaper & quicker solution to cracked or broken concrete or screed floors, its more like a patch over the damaged area, however this is a short term solution and it is always advisable to ideally have a new slab poured all at once.

PRO SCREED UK use different methods & products depending on each scenario, all thin section & repair screeds are hand mixed and applied with spiked rollers to aid the levelling process.

Our services...

include your 'one stop' package for your underfloor heating needs...

Mark O Donovan

Managing Director