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External Insulation

It is estimated that 45-50% of your property heat is lost through  uninsulated  solid walls.

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External Insulation at RT Plastering Services

Keeping your property energy efficient, warm and attractive

RT Plastering Services are specialists in providing External Wall Insulation Systems or EWIS. Materials used range from expanded polystyrene, mineral wool, polyurethane foam or phenolic foam together with a reinforced cement based mineral or synthetic finish.
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It is estimated that 45-50% of your property heat is lost through uninsulated solid walls. That means lots of wasted energy and money on heating costs – almost twice as much as a traditionally built property with an un-insulated cavity!​
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By insulating your walls from the outside, you will stop the heat from escaping and keep your home warmer.  By doing that, you will save money on your heating costs and lower your home’s carbon footprint.


​What are the benefits of External Wall Insulation ?

Applying External Wall Insulation to walls is one of the most effective ways of improving the energy efficiency of your home.

​External Wall Insulation (EWI) acts like a protective shell around your home, shielding the property from the  elements and retaining the warmth inside.
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External wall insulation Services Include:
Insulated Wall Render
Coloured Render.
Monocouche.
K Rend
Weber
Lafarge
Wet Dashing
Dry Dashing
Pebble Dashing
Sand and Cement
Lime Plastering
Waterproof Plastering
Machine Spray Plastering
Traditional Lime Render
All Aspects of External Finishes
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  • Benefits include:
  • It makes your home warmer.
  • It can save you around 560 per year on your energy bills.
  • It causes little or no disruption to the householder/tenant.
  • It can upgrade the appearance of the outside walls of your property.
  • It may increase the life of your property by protecting the existing structure.
  • The external wall insulation is backed with a 25 year SWIGA Guarantee.
  • Grant funding may be available through SEAI.
  • It’s suitable for all types buildings where other insulation methods are not possible i.e. cavity wall.

Because we work in partnership with SUSTAINABLE  ENERGY AUTHORITY OF IRELAND we can provide our clients and customers with first class technical and design support, whether it is for a single property or for housing stock which requires a street by street approach.
And some more benefits of EWI Systems:
  • Minimal disruption during application
  • Valuable internal space is not compromised
  • Durable for the lifetime of the building
  • Low maintenance
  • Strengthens and prolongs the building life
  • Extensive range of products, colours and finishes.

Cavity Wall Insulation at RT Plastering Services

Cavity walls are made of two layers with a small gap or ‘cavity’ between them. Solid walls have no gap, so they let more heat through.

Another way to tell is by measuring the width of the wall. Look at an external wall window or door and if the brick wall is less than 260mm, then it is likely a solid wall, while if it is greater, it is probably a cavity wall.

If you live in a house that is not made from bricks, such as a steel or timber-framed building, insulating will be different.
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​Solid Wall Insulation at RT Plastering Services

Insulating your solid walls could cut your heating costs considerably, because solid walls let through twice as much heat as cavity walls do. The good news is they can be insulated. If your home was built before 1919, its external walls are probably solid rather than cavity walls. 
Solid walls can be insulated – either from the inside or the outside. This will cost more than insulating a standard cavity wall, but the savings on your heating bills will be bigger too.


How much would you save by insulating your solid walls?

 
Detached
Semi detached
Mid terrace
Bungalow
Flat
Fuel bill savings (yearly)
560
390
275
180
145
Carbon dioxide savings (kgCO2/year)
1,900 kg
1,100 kg
720 kg
740 kg
610 kg
Typical installation costs*
External wall insulation: 
3,000 to 18,000
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Internal wall insulation: 3,000 to 14,000
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On average, having external wall insulation installed to a typical property, will save you around 560* per year on your heating costs.
 
External Wall Insulation also has other benefits – in many cases provide a new fresh look to properties! If you think that your property could benefit from having external wall insulation please get in touch with us now.
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  • Home
  • External Insulation
  • Coloured Render
  • Plastering Services
  • Special Offers
  • Grants Available
  • Recent Projects/Clients
  • Contact