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What Is Dry Lining Insulation?By admin
Wednesday, 25 September 2019
In the past several years, we, as a society, have become more aware of conserving heat, and the benefits for our homes that follow. Conserving heat has benefits not only for our humble abode, but for our country as a whole as well.
The result of conserving heat is a warmer and more comfortable household, with energy bills that are cut in half.
Lowering your energy bills is one of the main reasons why installing insulation is necessary. Some people chose to insulate their exterior walls, some prefer to concentrate their efforts on the interior walls instead. So, what is dry lining insulation? Is it interior or exterior insulation? Let’s break it down…
What is Dry Lining Insulation?
Dry lining insulation is actually internal wall insulation. It is an effective way to reduce heat loss, and is very popular in homes in Britain, even new ones.
It is fair to say that external wall insulation is still the gold standard. However, dry lining insulation, or interior insulation is a nice alternative. The difference in price is huge, with interior insulation costing half of the price of external insulation.
And there are times when external insulation is just impossible. That includes in listed buildings, or where stone facing is present. Dry lining insulation provides an effective way to reduce heat loss, as well as to improve the internal environment, by keeping mould and moisture at bay.
Internal insulation involves fixing a layer to the internal surface of external walls. This is usually done with a plasterboard finish. You must take care of the vapor control layer.
When adding internal insulation, you must meet the very latest Building regulations and standards. Most buildings in the UK have a standard insulation thickness of 25mm. Currently, the minimum for internal insulation is 270mm.
Some rooms and walls cannot accommodate insulation beyond a certain thickness. These examples include: stairways, smaller rooms, like the bathroom, corridors, and so on. However, that doesn’t mean you should skip insulation all together. It just means you need to insulate within the constraints.
Can You Prevent Condensation And Damp?
As long as it’s properly installed, damp and condensation can be prevented. Needless to stay D.I.Y installation attempts should be avoided at all costs.
The trick is to install proper vapour barrier within the layers of insulation, and in the correct position. It is advisable that you do not try to this in your own. Call in the professionals, and they will install vapour layer and insulation.
One of the quickest recipes for disaster is simply sticking an insulated board to the inside of a masonry wall. Be careful, and contact an expert before you try anything. Here is a quick summary what you need to do to prevent dampness and condensation:
– Make sure the external wall is weatherproof. That means good pointing, bonding, guttering, and similar. Pay extra attention to the west and south facing walls, as that is the direction the rain usually comes from.
– Do not push for a U-value of 0.25. When it comes to interior walls, sometimes less is more.
– A vapour control layer is a must. This is a thin sheet of plastic, polyethylene, which you position within the insulation. The VCL goes on the warm side of the insulation.
Sometimes, contractors install foil-faced plasterboard with foil tape. The VCL makes sure you stop vapour from entering your home, and, consequently, causing condensation.
Few insulation materials can fill cavities, but one which is more than up to the task is spray foam. The main thing to consider is the thickness of the material you need to achieve the intended U-value, the vapour barrier, and whether your insulation product can fill cavities
Insulation Options: The Key Contenders
There are various options available when you consider interior insulation. So, now that we know what is dry lining insulation, let’s take a look at your options.
Make sure that you always go for a product that is suitable for every wall. For example, there are some products you can apply only to solid brick/block walls where there is no cavity.
Here is a quick breakdown of the most popular products available on the market today:
This product is widely used to regulate temperature and sound. Fiberglass batts have an R-value of 2.9 to 3.8 per inch.
The material is composed of fine strands of glass, and comes in the form of long-panels which you can fit into the studs or frames on the walls.
Fiberglass for the standard 2×4 walls can come in low, medium, and high density, providing R-value of 11 to 15. The downside of fiberglass is that the material does not fill cavities.
Cellulose is another popular option for wall insulation. With an R-value of 3.1 to 3.8 per inch, loose-fill cellulose is the stuff that everyone is familiar with. The insulation is blown into the empty wall cavity.
The biggest selling point of cellulose is you can make it a D.I.Y project, and it is not as expensive overall. Unfortunately, cellulose density is uneven and spotty.
Another downside is that cellulose sags and settles over time. In addition to this, you cannot put it into a brick or concrete-faced wall unless you are absolutely certain there is a vapour barrier.
The challenge with spray foam insulation is efficiency and expertise. Do not try it yourself. Always go for a contractor that has a tradition in working with spray foam. The technology has matured in the past several years, and you definitely want a certified professional that will make sure your insulation is done perfectly
Why Use Spray Foam Instead?
With that being said, let’s talk about the new and innovative way for interior insulation. Spray foam is rarely mentioned as the answer to what is dry lining insulation, but it definitely should be.
In the past several years, spray foam has rapidly taken over the market for insulation. Put simply, spray foam does everything fiberglass and cellulose do not.
For starters, spray foam provides an air-tight seal to your walls, filling all cavities, cracks, and holes. That makes sure your home is protected and there is no heat gain or loss through the walls. Spray foam also provides noise barrier, a must for an interior insulation.
You can install spray foam on new dry lining studs, when they are erected on the face of the external wall. The foam expands up to 100 times its original volume, sealing and insulating every crack and crevice in the wall.
You can inject spray foam into existing dry lining boards through small 8mm holes. There is no damage to the delicate surface, and your walls are fully insulated. Compared to fiberglass, for example, spray foam can bring R-value of 14 to 28 in the same wall cavity, depending on the product used.
The challenge with spray foam insulation is efficiency and expertise. Do not try it yourself. Always go for a contractor that has a tradition in working with spray foam. The technology has matured in the past several years, and you definitely want a certified professional that will make sure your insulation is done perfectly.
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