Topflow Screed A

Flowing screed - pump applied anhydrite screed



Overview

Topflow Screed A is a free flowing pump applied anhydrite screed.

Topflow Screed A is a free flowing flooring screed solution that is both time saving and cost effective to provide a high-quality finish.

Free flowing self compacting Topflow Screed A is made with a unique synthetic anhydrite binder in place of cement and is pump applied due to its fluid consistency. This means that the free flowing nature of this screed is easier to level and lay, covering areas of up to 1,200m² in a day. This free flowing screed is also thinner than conventional screeds making it the natural choice for use with underfloor heating systems.

The range includes: Topflow Screed A Steeldeck, Topflow Screed A Sky, Topflow Screed A Excelio, Topflow Screed A XTR, Topflow Screed A SP, Topflow Screed A FD, Topflow Screed A Soundbar and Topflow Screed A Thermio +.

Topflow Screed A is a sustainable free flowing anhydrite screed for high quality floors.

Topflow Screed A doesn’t contain any cement and has an overall recycled content of 36%. The binder is made from 98% recycled material. Compared to sand cement, the Topflow Screed A self compacting solution installed carbon footprint saving is 20.45kg CO2e/m2.

 

Where can Topflow Screed A be used?

Screed for underfloor heating

Topflow Screed A free flowing anhydrite screed is thinner than conventional screeds making it ideal for underfloor heating.

Screed for residential and commercial

Topflow Screed A is ideal for use in residential and commercial floors carrying pedestrian traffic within BS 8204.

Timber frame construction

The properties with Topflow Screed A XTR free flowing anhydrite screed make it ideal to use with timber frame construction.

Screed for floors

Topflow Screed A free flowing anhydrite screed is ideal for unbonded, bonded or floating floor construction.

Screed for acoustic resilient systems

Topflow Screed A Soundbar is designed for both commercial and residential projects where improved acoustics are required.

Screed for high rise buildings

Topflow Screed A Sky free flowing anhydrite screed ideal for use in high rise buildings that are above 10 storeys.

Screed for new build and renovations

Topflow Screed A free flowing anhydrite screed for use on new build works or renovation projects.

Screed for hospitals and care homes

Topflow Screed A is free from protein and doesn't harbour potentially harmful bacteria, ideal for health care settings.

Screed for composite decking

Topflow Screed Steeldeck free flowing anhydrite screed is ideal to be used with Lewis Deck dovetail sheeting.

Why use Topflow Screed A?

Additional info

In order to reduce project construction times, this free flowing screed is both fast, flexible and simple to place. Sand cement screeds are heavy, cumbersome and time consuming, when compared to the quick installation and ease of placement of this free flowing anhydrite screed. When time is short and project requirements are long, this makes Topflow Screed A an ideal solution.

Topflow Screed A is a free flowing pump applied anhydrite screed that includes a ranged of variants. The range includes: Topflow Screed A Steeldeck, Topflow Screed A Sky, Topflow Screed A XTR, Topflow Screed A SP, Topflow Screed A FD and Topflow Screed A Soundbar

Topflow Screed A Steeldeck has been designed specifically to be used with the Lewis Deck dovetail sheeting for use with either timber, metal web or steel joists in masonry, timber or lightweight steel structures. Steeldeck is perfect for ground, separating or mezzanine floor constructions. With increased productivity and improved loading compared to floating floor treatments, Topflow Screed Steeldeck easily accommodates underfloor heating within the screed zone.

Topflow Screed A Sky is designed for use in high rise buildings above 10 storeys. It is specifically formulated to reduce the moisture loss to pump lines and inline segregation. Sky potentially increases productivity and up to 1,200m2 per day can be layed. Sky has a minimum thermal expansion of (0.012mm/mmK).

Topflow Screed A Finio is an ultra-thin liquid screed that can be installed at depths down to 20mm. It offers up to 60% reduced depth when unbonded compared to traditional sand cement screed and is up to 60% lighter, with weights down to 40 kg/m². This makes it ideal for renovation projects to help maximise ceiling heights or where there is a need to reduce floor weights.

Topflow Screed A Excelio is ideal for thin section job sites Screed A Excelio can be bonded as thin as 12mm to 30mm and unbonded 20mm to 50mm primarily designed to be a bonded screed bridging the gap between smoothing compounds and bonded screeds 30mm.

Topflow screed A SP is skin free technology has been designed to greatly reduce the need for initial sanding of Tarmac Topflow Screed A and its variants. SP has been formulated to give an open textured, skin free finish; which is ideal for floor finishes, and does not impede drying efficiency. Please refer to your local Tarmac representative for availability. SP can be added to many of the products in the Tarmac Topflow screed range to give a skin free finish without affecting the characteristics of the mix.

Topflow Screed A XTR is designed for use with underfloor heating systems and where higher than usual loadings are expected. Topflow Screed A XTR is suitable for applying as a floating screed and can be used in both domestic and commercial buildings, providing excellent thermal conductivity.

Topflow Screed A Soundbar is designed specifically for use over timber joints both in masonry and timber framed designs. This screed is suitable for both commercial and residential projects where improved acoustic, loading and durability are required. With its free-flowing capability, up to 1,200m2 of Topflow Screed A Soundbar can be laid per day.

Topflow Screed A Thermio + is the only thermal screed with a guaranteed minimum thermal conductivity backed by BBA. For underfloor heating it offers a Thermal conductivity of 2.5 W/m.K *(Nominal Value) and up to a 30% increase in thermal emission and up to 80% of thermal diffusivity for faster increase of temperature.

Topflow Screed A FD Faster Drying technology brings together all the benefits you expect from Tarmac’s Screed A range, but now with a faster drying, low skin option. FD technology has been designed to be an addition to the Tarmac screed range to give a faster drying, low skin solution without affecting the characteristics of the mix. Tarmac’s Screed A-FD has been proven to dry at least twice as quickly under normal conditions on-site installation when compared to our standard Tarmac Topflow Screed A. And in laboratory trials carried out at (20 degrees / 65% RH) will be able to attain 75% relative humidity (%RH) before most flowing screeds. By using Tarmac Topflow Screed A-FD, non-sensitive floor coverings can be laid in as little as 21 to 28 days dependent on screed thickness 50mm and local conditions. For sensitive flooring coverings Tarmac Topflow Screed A-FD is also significantly faster than the standard calcium sulphate to attain 75% RH and therefore allow covering earlier.


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Case studies


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