Building And Construction Guide On Gas Membranes

The idea that damaging, unnoticeable gases might be going into a house is a frightening one. If you are constructing a brand-new home, extending your house, or having your basement transformed, you need to think about the prospective threats of radon and other ground gases.

In this guide, we supply some background info on ground gases, the gas barrier choices offered, and directions on how to set up gas membranes in a residential or commercial property.

Security from Ground Gases

These gases consist of radon, co2, carbon monoxide gas, and methane– all of which are asphyxiants (significance that they can lead to suffocation). They also position other health threats consisting of cancer.

These gases can happen naturally or be a result of contamination of the land, such as on brownfield websites, old mine operations, or landfill websites where waste has been buried.

It is necessary to very first figure out the ground gas threats of your website – this can be through a website examination and gas tracking in some circumstances. You can use this radon map from Public Health England to get an indicator when it comes to radon.


Radon is an undetectable radioactive gas that is formed when the little quantities of uranium in soils and rocks rots. Some places of the UK have a higher opportunity of high radon levels, and brand-new construct homes in these places need securing.

Co2 & Methane

The threat comes from an accumulation of these gases or the abrupt release of them. Methane also positions a more threat as it is combustible.

Gas Membrane Security

When developing on land where ground gases exist, it is important to take action to reduce the possibilities of gases getting in a residential or commercial property. Structure Laws need to be thoroughly followed. Among the most extensively readily available alternatives is gas membrane defense.

What are gas membranes?

Gas membranes are normally plastic sheet membranes that avoid ground gases from traveling through them. They are normally set up throughout the building and construction and type part of the structure style.

How to avoid radon gas entering your house?

When properly set up by an expert and used in combination with a Radon, DPC will successfully avoid radon from getting in a house, many gas membranes.

The other methods of handling radon in a house are to use a radon sump in strong and suspended wood floorings. Favorable Input Ventilation (PIV) systems can also work at removing moderate and low levels of radon in an existing house, but expert suggestions are constantly needed.

Why use a gas membrane?

Gas membranes avoid ground gases moving from the soil and into a home where they can build up and position substantial dangers. As formerly described, ground gases can be damaging to health, and for that reason, it is very important to prevent direct exposure to them. The setup of a gas membrane needs to include in the structure styles of a brand-new construct residential or commercial property.

Step One

Unroll the very first membrane. Make sure that it is laid on a smooth surface area or one that has been sand blinded to avoid any leaks.

Step Two

Unroll the 2nd membrane, overlapping the very first membrane by 150mm. Guarantee that both membranes stay complimentary and dry from dust and dirt.

Get rid of the protective paper from the Double Sided Tape. Now use pressure to the membrane to sign up with the two membranes together.

Every joint in between gas membranes needs to be made a gas-tight in this method with the double-sided tape.

Step Three

Essential note: If you have any pipework coming through the radon and the piece barrier sheet, then you need to take additional procedures to guarantee gas can’t get away. Cut a hole in the membrane as near to the size of the pipeline as possible. When the pipeline stays in place, you can use stovepipe hat fittings over the pipelines along with gas tape to guarantee a gas-tight seal.

Jointing Gas Membranes with Radon barrier tape

For bigger commercial and industrial systems, you will need to set up an active gas system. This counts on electromechanical aspects to boost the ventilation.