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One of the disadvantages modern lightweight building constructions, such as timber frame, is their lack of ability to remain cool during the summer and retain heat during the winter. For this reason, many architects incorporate a ‘thermal mass’ – and Delta Membrane Systems has now introduced a product called Delta-Cool 24 to meet these demands.

This ‘phase change material’ (PCM) is specifically designed to enhance the comfort levels within a building while being cost-effective and ecologically sound.

Four options are available – pouches, panels, balls and dimple sheet. The pouches give optimum heat transfer and flexible performance for passive climate control in commercial buildings, while the panels provide a dimensionally stable package for passive cooling.

For heat storage in active systems, particularly in combination with solar energy and heat pumps, the balls are offered, and the compact dimple sheets are for floor heating systems and cold frames.

In each case, the basic ingredient is salt hydrate, with a melting temperature of between 22 and 28OC, and a crystallisation temperature of 22OC. Cooling capacity is between 25 and 40W/m2. Maximum service temperature is 60OC.

The more conventional method of creating a comfortable working or living environment is to use air conditioning systems. However, these can be expensive to purchase and operated and have additional ecological drawbacks. They can also be noisy, create drafts, and make the air dry.

With Delta-Cool 24, the room temperature is constantly maintained at about 25OC, and 1 litre of the product will absorb as much energy as about 10 litres of water.

No direct energy input is required, as Delta-Cool 24 takes its energy from the ambient air temperature.

It can easily be placed on top of suspended ceilings, and the dimensions conform to standard system grids. Retrofitting is not a problem, as the packs are simply placed on top of the existing ceiling panels.

Other benefits include a non-toxic formulation, flame retardant, and 100% recyclability.

Basement Groundwater and Foul-Waste Management Highlighted.

Solutions for keeping basements and all below ground structures dry and free from damp are shown in the latest brochure from Delta Membrane Systems.

Entitled Packaged Pump Stations & Water Management Solutions, this brochure highlights a wide variety of products designed to tackle various tasks to ensure a basement stays dry and inviting.

These included standard sumps, retrofit products and a dual drainage sump. They all include built-in non-return valves and anti-air locking pumps.

Also featured is the Floormaxx range of submersible sewage lifting units, designed for the disposal of sewage water from toilets below the backwash level.

One of the more unusual designs is the new Delta Staufix backwater valve with rodent protection. Two vertical free-hanging backwater flaps are fitted to ensure that a building’s wastewater flows freely through the valve while preventing any backwater, or rodents, entering into the building.

Each product is represented pictorially, and full technical information is given.
Contact Delta for a free Brochure, on 01992 523811.

Damp problems that might occur in a below-ground level bakery at an Asda store in Walsall have been overcome by using Delta-NP Drain from Delta Membrane Systems.

The store at Shannon Mill is a mixed development scheme with apartments above. The bakery and car park for the store have been placed below ground level on a very wet site where severe water ingress and soil erosion were inevitable.

To overcome these problems, Delta-NP Drain membrane is fixed to the piled foundations of the store and apartment structure. The soil and between the piles is bound and held back by the Delta-NP Drain. Water is allowed to pass through, and this is drained down in the void in the middle of the membrane, into a channel cast into the ground slab for disposal. ......

While traditional damp proof membranes trap moisture and hold up work while the relative humidity of the concrete takes time to drop, Delta-FM from Delta Membrane Systems allows work to continue immediately after placement thanks to a special low stud profile.

Capable of collecting groundwater from a cavity drainage membrane system, Delta Sump+Pump is available from Delta Membrane Systems.

Groundwater enters via the drained cavity of the membrane system and collects through the top opening of the Delta Sump.

Water is then pumped by a float-activated submersible pump to mains drainage or other suitable outlet.

Fit for purpose, thanks to PT

One of the more common problems encountered in refurbishment work is that of damp, and among the wide range of solutions offered by Delta Membrane Systems is Delta-PT.

This high performance polyethylene membrane is extruded into a series of studs to create a continuous air gap behind the waterproof membrane.

On the face of the membrane is a welded mesh which allows plasters and renders to bond efficiently to achieve dry and durable finishes. Dab-fixing of board finishes, including insulation, is also an option.

Delta-PT can be used on walls and vaults.

The British basement was neglected for much of the last century but the last decade has seen a big revival in basements, and now they are back in style. Modern construction methods and waterproofing techniques have been key factors in this, allowing basements to be designed and created in various ways; New build, Refurbishment, and Retrofit (as illustrated).

Delta carry out regular training days at their Epping venue. They are proving very popular, judging by attendances, and early booking is advised. The course is also an integral and important part of training for contractors wishing to attain 'Registered Installer' status.

The 1 day course covers BS.8102, "The protection of structures against water from the ground", and an in depth view of cavity drainage membranes. It also explains in detail how various drainage options are used to manage and control the water. A short test paper is given at the end, and a certificate of attendance is issued. The course is RIBA CPD approved for those operating the scheme.

Dates for the next courses to be held in 2008 are;

Friday 18th January
Friday 22nd February
Monday 14th April

To register for the course and find out future course dates
Contact Delta on +44 (0)1992 523811.

The Homebuilding & Renovating Show ... click here for FREE tickets

DELTA are exhibiting at the NEWBURY show between 28th - 29th June 2008 at the Newbury Showground.

The Homebuilding & Renovating Show attracts a wide audience including professionals, such as Architects, Engineers, Surveyors, and contractors. The exhibition was also targeted at the self-build market, and a wide range of expert advice was available at the show from the Delta stand and the Basement Information Centre. For more details on future shows, click the link above.

For more information contact Delta on 01992 523811.

Engineers building the 9.5 mile Chattahoochee Tunnel in Cobb County, Georgia, choose DELTA-MS to ensure proper drainage of subterranean water during and after construction.

Cor Castle, in Ireland, has been completely restored to it's former glory using traditional materials, such as local stone, lime mortar, and 'Roundtower' lime plasters, with a little help from Delta membrane systems.