Floor Level Tripods for Screed & Concreting

Product Information

Set a laser level to the datum tripod disc and then transfer this level to all the other tripod discs in turn, adjusting the height carefully until they are all set to your datum level.

Screeds are also thepreferred medium for underfloor heating pipesas the material excels at absorbing and radiating warmth, becoming an integral part of the heating process. Metex liquid screed dapple bars are manufactured from light weight aluminium and then fully powder-coated. They range in size from 900mm to 3000mm. We also supply fully powder coated mild steel dapple bars for flowing concrete. Dapple bars help screeders & groundworkers release air bubbles and achieve a smooth finish when laying free-flowing self-levelling liquid screeds, and also lightly break the surface tension for a more durable, accurate and consistent finish when laying self-compacting concrete. Ideal for use with Topflow, Belitex, Cemfloor, Agilia, Breedonflow Form, Cemflow, Highflow and many more. Screed Tripods We supply robust stainless-steel flow cones & flow plates for slump testing. This equipment is used by screeders to determine the flowability/slump of free-flowing, self-levelling liquid screeds such as Gyvlon, Breedonflow Screed, Isocrete, Supaflo and many more. Spazzles and Concrete Placers As we have discussed above, removing the laitance is one of the disadvantages of a (gypsum) liquid screed. It will need to be sanded off, ideally after about a week as it gets harder to remove if it is left too long.

Form work will be needed around obstacles and troublesome pipe work etc so that you can ensure that water and screed does not get to them. As we have discovered there are essentially three board options for your screed. We will summarise the relative pros and cones of these to help you make the right choice. Benefits of Traditional Screeds If your final drain length is 15 feet and you are going to slope the line at the minimum 1/4-inch per foot, the drain has to slope a total of 3 3/4 inches from the start of the pipe to the end. To determine the slope, multiply the slope by the length of the line, in this case, 1/4 by 15. But if your drain route requires a bend or turn, you have to calculate the slope of each piece of pipe separately. If you have to route a longer drain pipe without a lot of space, you may opt for a deeper slope up to the maximum of three inches per foot. For example, if you want to route that same 15-foot drain pipe at a slope of three inches per foot, the drain has to slope a total of 45 inches from start to finish. To determine the total slope, you will multiply three by 15.

Where there is shuttering, such as across doorways or steps, this needs to be sealed with mastic or expanding foam so that it is watertight. Expansion foam will generally be needed across doorways. Step 5: Secure Under-floor Heating Pipes As they decided to put in underfloor heating, Daniel & Kay chose Gyvlon® Eco FD for its proven performance, fast drying times and good thermal conductivity. The Eco FD is a faster drying version of Gyvlon® Eco screed, allowing trades & foot traffic within 48 hours and floor coverings to be applied within 4-8 weeks depending on depth and drying conditions. If you’ve recently bought a fixer-upper, decided to expand your home, or are planning a new build, chances are you might want to put in a screed floor, especially if you’re thinking of using underfloor heating. Self-levelling concrete is a modified form of cement that is highly liquid and flows easily. Unlike traditional concrete, it does not require the addition of large volumes of water for placement.

With sand/cement, specifying a modified admixture can speed things up so floor coverings can be down in about three weeks. The screed should be totally dry before finishing with your desired floor covering. Preparation for Laying Floor Covering on a Liquid Screed The screed is sloshed into the area where it is needed and spread out by someone wading through it. It is the consistency of cream so runs to all corners of the polyethylene pool you have created. It is filled up until the level of the screed touches the plate on the screed tripod. At this point you have enough screed to the pump will be stopped and the tripods are removed.

When you have finished you will have a shallow, water-tight polyethylene “pool” where the screed will collect. Step 4: Waterproof Shuttering Costs are also reduced because itcan be applied at depths as thin as 35mm. With underfloor heating you typically need 30mm cover above UFH pipes, making about 45mm in total, still incredibly slim by conventional standards. Once dry they do not need surface preparation, as the calcium sulphate screeds, before laying the finishing floor surface, particularly tiles In this new extension, floor screed has been applied over wet underfloor heating pipes. (Image credit: getty images) Preparing the Floor Screed for the Floor Covering As it is so critical to get the right amount of screed, the contractor you are using will probably not leave this to you but come and measure the amount of screed that is needed. Too little and you will have to try and get your supplier to deliver some more as soon as possible before your current batch goes off. This is fraught with problems as mixing batches will lead to inconsistencies, assuming that they can even get another batch to you.

Set a laser level to the datum tripod disc and then transfer this level to all of the other tripod discs in turn, adjusting the height carefully until they are all set to your datum level. The floor needs to be ‘tanked’ like a mini swimming pool using a polythene sheet membrane (typically 500 gauge) To contain the liquid, the polythene sheet membrane is then lapped up the walls in a sharp right angle and glued in place with spray adhesive. This is in addition to existing layers such as the damp-proof course/damp-proof membrane, insulation strips around wall edges, and thin strips of compressible foam designed to accommodate any expansion once the screed is dry. There are many general benefits which are similar to a pumped calcium sulphate screed, but over and above these there are the following:

Made of the right stuff – for dealing with flowing concrete a steel dapple bar is heavier and more suited to a dense product and is generally more robust. Ideally it will be powder coated for longer life and easier cleaning. It is very level – much more so than is possible with a traditional screed even with a experienced professional A liquid screed is pumped in and poured across the floor surface. This liquid finds it own level so will be perfectly level and will be hard enough to walk on in about 72 hours, although it will take a fair bit longer before it is completely dry and you can finish the floor – we will discuss drying times in details after explaining how to pour your liquid screed below.The drying time is not insignificant, although broadly similar to a traditional screed, and care needs to be taken during the first 72 hours where drying should not be too fast The material cost is about 20% higher than a calcium sulphate screed although in a similar way you will make this up with the reduced time and labour involved. The final job is to tape all the joints and scrape off any lumps of plaster or debris so they don’t float up to the surface once the screed is poured.