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can you use foil backed underlay with underfloor heating

by Mr. Alexandre Bogan I Published 3 years ago Updated 2 years ago
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Insulated Underlay for Underfloor Heating Warmup Insulated Underlay sits between the cold subfloor and the Foil Heater, reflecting heat upwards, therefore, making the underfloor heating system more efficient and effective. The foil backing acts as an effective moisture barrier and should installed face down.

Can you use a foil back underlay with underfloor heating ? A foil back underlay generally serves a purpose of providing insulation to your home. For this reason it usually has a higher tog rating so it won't allow sufficient heat pass through it. Because of this we would not recommend any foil back underlay.Aug 5, 2020

Full Answer

Can you put underlay over a warm up foil heater?

The insulated Underlay makes an ideal combination for installation of soft and resilient floor coverings such as carpet and laminate over the Warmup Foil Heater. Electric underfloor heating system for laminate, carpet, vinyl, engineered wood and other floating floor finishes.

What type of underlay should I use for underfloor heating?

For example, if you use Forced Air or Hydronic underfloor heating, opt for an underlay that has a tog rating of no more than 1.0. One good type of underlay to use here is Duralay Heatflow. It has a meagre tog rating, making it ideal for underfloor heating systems. You could also install a Tredaire King underlay if you have carpets on the floor.

What is warmup insulated underlay?

A thin polystyrene insulation barrier with effective acoustic properties to reduce contact noise. Warmup Insulated Underlay sits between the cold subfloor and the Foil Heater, reflecting heat upwards, therefore, making the underfloor heating system more efficient and effective.

Why use 4 in 1 Foil backed underlay?

Prolong the life of your floor with our 4 in 1 foil backed underlay. The foil helps to insulate a room by reflecting heat while a damp proof membrane prevents moisture damage to the subfloor. The underlay also comes with tape which eliminates the need for an adhesive, ensuring a quicker fit.

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Which floor coverings are best suited for underfloor heating?

The best type of flooring to use with underfloor heating is tile and stone. Tile and stone have high thermal conductivity, meaning that the heat from an underfloor heating pipe or wire transfers to the floor surface quickly. Tile and stone also retain heat well making the system efficient.

What does foil on underlay do?

The underlay should be laid foil side down (essential to ensure maximum resistance to moisture from the subfloor) allowing a 5cm excess of underlay to run up the perimeter wall.

Is Cloud 9 underlay suitable for underfloor heating?

Manufactured by Ball & Young Cloud 9 Underlay, Cloud 9 is the brand leader. This brand new underlay is 6mm thick and is ideal for use with underfloor heating. Ideal for heavy contract use.

Can you use fibreboard underlay with underfloor heating?

Stay clear of fibreboard or thick acoustic underlays, as these will reduce the efficiency of the underfloor heating system. Regardless of which underlay you choose, make sure it has a DPM (Damp Proof Membrane).

Is aluminum foil a good heat barrier?

Cover a window with aluminum foil to keep sunlight out. Adding insulation to your home is an easy way to save on energy costs. Aluminum foil, also called tin foil, makes an excellent insulator, and in some situations, it works better than materials like cotton or paper.

Can aluminum foil be used as a moisture barrier?

Aluminum foil is widely used in the construction industry for insulation because of the reflective properties inherent in its silver colour. This reflective foil also acts as a moisture and vapour barrier and is windproof.

Is there special underlay for underfloor heating?

Duralay Heatflow for laminate & wood is the best underlay for laminate flooring with underfloor heating. It has a very low tog rating, which means warmth can flow through the flooring very effectively.

Do you need underlay if you have underfloor heating?

When you have underfloor heating, you should use the underlay Quick-Step Silent Walk. This underlay keeps the heat resistance within the allowed tolerances. Using the correct underlay can stop rising damp or condensation, and will reduce the risk of open joints during the heating period.

Which underlayment is recommended to be used with radiant heating systems?

CorkCork is the traditional, most well-known choice for underlayment. It's known for its excellent insulation properties, which is vital when it comes to creating a barrier between a radiant heating system and a cold concrete slab.

How thick does insulation need to be for underfloor heating?

We recommend you use a minimum layer of 50mm Polyurethane insulation. If there is not enough space for 50mm insulation, 30mm can be used.

Should the floor be warm with underfloor heating?

it should feel slightly warm. put a rug or carpet down for an hour. It will insulate the floor, preventing heat loss to the air, so when you put your hand under the rug, that section will be noticably warm. If it is a concrete floor, it may take a couple of hours to warm up.

Does fibreboard underlay need an expansion gap?

Installation of underlay Underlay is placed next to each other on base surface, leaving 5–10 mm expansion gaps between the boards and the walls. In order to get an adequate expansion gap, you can place pieces of underlay between the walls and the boards and remove them later when all the underlay is installed.

Do you need to tape down underlay?

The answer is no. We recommend to use duct tape as every hardware store carries this product. Some manufacturers sell specialized tape for underlayment but there is no extra benefit.

Is it worth using radiator foil?

However, the Energy Saving Trust says that foil behind radiators is not worth doing if you already have cavity wall insulation. Meanwhile, make sure the heat from your radiators is not obstructed by curtains, furniture or drying clothes and towels. What inexpensive ways have you found to keep warm?

Does foil floor insulation work?

Foil insulation can insulate almost anything! As effective as they are, in reflecting heat that enters your facility through the roof, they are just as effective in reflecting heat to the source when used for wall insulation or floor insulation.

Does aluminum foil dampen sound?

It is the first of these benefits that helps explain why aluminum foil protects so well against sound. That is, its ability to absorb and retain allows the material to capture unwanted noise at its source, preventing it from reaching the ears of nearby listeners.

Which Flooring Type Is the Most Suitable for Underfloor Heating?

There are a handful of flooring types that work well with many underfloor heating options, and we’re going to explore each of them in detail in the following sections:

How Long After Laying the Flooring Should I Wait Until Turning the Under Floor Heating On?

As a general rule of thumb, you need to wait for around a week before turning on underfloor heating after laying the flooring. However, you may activate it for a few minutes after installation to ensure that everything is working as it should.

Can I Put a Rug on a Floor With Underfloor Heating?

Yes, you can put a rug on a floor with underfloor heating, albeit with some restrictions. When you place a rug on a heated floor, you’re essentially adding an extra layer for the heating system to get through, making it work harder. This could result in a slight decline in the amount of heat you feel in the room.

Thickness

As you might’ve guessed, thick rugs will increase the insulation of the flooring, causing the underfloor heating to struggle. Your best bet would be to choose a rug with a tog of 2.5 or less to have the most efficient underfloor heating system.

Length

Rug length can dramatically impact the performance of your underfloor heating system.

Rug and Underlay Materials

When shopping for a rug to use with your underfloor heating system, make sure you pick one that’s made of natural materials instead of synthetic ones. Synthetic materials, like nylon and polyester, have poor heat tolerance, meaning that you’ll likely damage a rug made of one of these materials if you put it on a heated floor.

Which Is the Best Underlay For Underfloor Heating?

It depends on what type of underfloor heating you have. For example, if you use Forced Air or Hydronic underfloor heating, opt for an underlay that has a tog rating of no more than 1.0.

Foil Underfloor Heating Mats

BN Thermic foil heating mats are a very simple means of heating a laminate or engineered wood floor. The mats consist of heating cables sandwiched between two layers of aluminium foil ensuring excellent heat distribution.

Selecting a Suitable Mat

When selecting a mat, the objective is to cover a much of the free floor area as possible. Mats should not be installed under fixtures such as kitchen cabinets and shower trays. As a rule of thumb, we suggest selecting a mat with an area approximately 10% smaller than the free floor area.

Thermostatic Control

Each room will require its own programmable thermostat. BN Thermic offer a range of suitable thermostats to meet different aesthetic requirements, tastes and budgets. However, all BN Thermic programmable thermostats share the same key features.

Do I need special underlay for underfloor heating?

Underfloor heating is a luxurious feature and one that brings you extra comfort at home, especially in the colder seasons. If you’re considering bringing some extra warmth to your flooring, there are a few things you need to consider.

Types of underfloor heating

Firstly, there are three main types of underfloor heating to choose between. These include Hydronic (or wet) underfloor heating. This uses a series of pipes, which are laid under the floor. Hot water is then pumped through them to warm your flooring.

Can underfloor heating go under laminate?

The permanent covering of your floor is incredibly important when it comes to selecting the best underfloor heating underlay. Duralay Heatflow for laminate & wood is the best underlay for laminate flooring with underfloor heating. It has a very low tog rating, which means warmth can flow through the flooring very effectively.

Which underlay is the best for underfloor heating with carpet?

The best underfloor heating underlay for carpet is Tredaire King. Its low tog rating allows efficient heat transfer through your carpet and into your home. As well as being an excellent thermal conductor, It also feels luxurious underfoot, having a comfort rating of 5.

What is a tog rating?

When choosing underlay for underfloor heating, the tog rating is something you need to consider. It’s the thermal resistance of an underlay. The lower the tog rating of a product, the lower its thermal resistance is. Having a low thermal resistance means that more warmth can pass through the underfloor heating underlay and into your home.

Why Should we Insulate Underneath Underfloor Heating?

Heat rises, but not quite so well when flooring is placed on top of it. It then takes a little while for the underfloor heating to warm up whatever is covering it before it begins to heat the room. This is further explained in our project page on electric underfloor heating and also in our project covering water underfloor heating.

Insulating Ground Floor Slabs for New Buildings and Extensions

Insulation for floors comes in many shapes, sizes and thicknesses and in your current ground floor you may already have an insulated concrete floor ro slab.

Laying the Insulation Under the Concrete Floor Slab

The image below shows what the floor slab insulation looks like when the concrete floor slab, rather than the screed, is poured on top of the insulation. The foundation walls are built up to damp proof course level and the damp proof membrane is laid inside them.

Insulating Existing Ground Floor Slabs or Hollow Floors

When it comes to underfloor insulation and heating in existing rooms where the floor has already been in position for some time, thickness is very important. You want the maximum insulation value and heating ability, for the minimum thickness of insulation as you don’t want to raise the height of your flooring too much.

Laying Laminate or Engineered Flooring onto a Water Heated Concrete Floor

To lay laminate flooring, engineered hardwood flooring or carpets onto a new floor screed with water underfloor heating is one of the easier jobs. There are no special procedures to follow, just the manufacturers instruction on how to treat the flooring and our tips on fitting laminate flooring on this page.

Laying Laminate or Engineered Flooring onto an Electrical Underfloor Heating and a Concrete Floor

Laminate or engineered flooring needs to be laid onto a perfectly flat surface. To lay them directly on top of the electric wires of an underfloor heating system therefore is a little unwise. While some brands of underfloor heating system will allow you to do that we feel it is worth an extra few quid to get the job done in the best way possible.

Laying Tiles onto an Electrically Heated Concrete Floor

This is the first of the various flooring options discussed on this page that require the use of an insulation sheet or tile backer board.

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