Energy saving for solid walls with Si-Dry

Saving money with Si-Dry A dry wall is a warm wall. A study by English Heritage showed that dry walls are up to 3 times better at keeping heat in than wet walls. Si-Dry is a deeply-penetrating, colourless waterproof coating that keeps walls dry – which means they keep heat in – saving energy – and saving you money.

35% of heat loss occurs through uninsulated walls. The problem: 35% of heat loss occurs through uninsulated walls. Up to 35% heat loss through uninsulated walls

Traditional Solution: Insulation Effective but expensive, disfiguring, and unsuitable for damp walls.

Si-Dry solution: Utilise the natural insulation qualities of the masonry by keeping it dry.

Have the potential to be great insulators... Masonry walls: Have the potential to be great insulators... Solid masonry walls are typically 9 inches thick – considerably thicker than most insulation materials …but only when dry.

Insulation dampness problems:

Let heat escape… …just like wet clothes. Wet walls Let heat escape… …just like wet clothes.

Pores in masonry: Stop heat escaping when dry, but allow heat to escape when filled with moisture

A dry wall is a warm wall: An English Heritage study showed wet walls conducted 1.5 to 3 times as much heat as dry walls.

Making walls warm and dry with Si-Dry

What is Si-Dry? Si-Dry is a breathable, silicone based cream that is applied to masonry by brush, roller, or spray. It penetrates deeply into the masonry producing a colourless water-repellent layer Key features: Water-repellent Colourless Breathable Deeply-penetrating Long-lasting (>20 years)

Penetrates into masonry to make it water-repellent Applied by brush, roller or spray: Penetrates into masonry to make it water-repellent

Deeply penetrating: In-depth protection – bridges minor imperfections in masonry and increases service life

Tested to BS EN ISO 15148:2002 on brick, sandstone and mortar. Suitable for brick, mortar & sandstone Tested to BS EN ISO 15148:2002 on brick, sandstone and mortar. Note: Not suitable for Limestone. Your Si-Dry contractor will be able to provide an alternative treatment for Limestone using Si-Dry LS Liquid

Will not change the natural appearance of masonry Colourless: Will not change the natural appearance of masonry Unlike alternative masonry treatments, Si-Dry will not permanently darken masonry or leave a glossy sheen. A small inconspicuous test treatment will be carried out by your Si-Dry contractor and some surface darkening will occur whilst Si-Dry penetrates the masonry – however this will fade over time

Breathable: Very low reduction in breathability (<10%) when tested to BS EN ISO 12572:2001) Breathability is important as it moisture already in the wall to dry out – allowing the energy-saving benefits of Si-Dry to be achieved more quickly

How much energy will I save?

30% Typical energy saving: Is around 30%, but actual energy saving will vary depending on local weather and wall type. 30%

Rainfall is above average Maximum energy savings occur where: Rainfall is above average Walls are constructed from porous bricks/stone

So potential heat savings are highest in these areas. Northern and western areas have highest rainfall: So potential heat savings are highest in these areas.

Have the highest potential energy saving Porous bricks and stone: Have the highest potential energy saving The air pockets in porous masonry act as insulators – but only when dry. Once moisture has entered these air pockets most of the insulation properties are lost. Treating with Si-Dry prevents this from happening – resulting in significant energy savings. Your Si-Dry Approved Contractor can test the porosity of your masonry using a Karsten tube

How long will Si-Dry last?

Si-Dry has a life expectancy of over 20 years based on: Field experience with older-generation silicone water repellents Accelerated aging tests

Si-O bonds in Si-Dry’s active ingredients are much more resistant to UV light than other types of water-repellent. UV-resistance is a key factor in providing long-term water-resistance as without it the water-repellent effect will be destroyed by sunlight

Accelerated aging using an industry standard QLab QUV SE No reduction in water-repellency after 2000 hours extreme UV exposure

Depth of penetration means most of the treated zone (i. e Depth of penetration means most of the treated zone (i.e. deeper than 2mm) is never exposed to sunlight

Summary

Si-Dry reduces heat loss by keeping walls dry Breathable and colourless >20 year life