How to Insulate Under Carpet, Vinyl or Laminate

Insulation Beneath Flooring

While we often focus on walls and windows when insulating our homes, keeping the floor insulated should be a priority, as energy efficiency starts from the ground up. Not only does proper insulation ensure comfort at home, but it can also save you a decent amount of money in terms of energy bill savings in the long run.

However, Installing insulation properly can be quite tricky, especially when it comes to underfloor insulation, and that’s where this guide comes in handy! Here, we will show you how to insulate under carpet, vinyl, or laminate floors, by walking you through a step-by-step tutorial. 

A Comprehensive Guide to Insulate Carpet Vinyl or Laminate

The main advantage of the following guide is that it can work with a variety of flooring types, whether you’re using carpets, laminate, or vinyl flooring options. Here’s a brief overview of the steps you need to follow as well as some essential tips for proper insulation.

Step 1: Choose the Right Type of Insulation

First, you should start by picking suitable insulation for your floor. Whether your flooring is made of vinyl, laminate, or carpeting, you can use pretty much the same materials for insulation.

The most popular material here is called “felt underlay”. These rolls are typically made of high-insulation materials, such as wool and rubber. 

You can also use floor foam rolls, which are made from dense polyethene/polyester and covered with a thin sheet of reflective aluminium foil on either side. 

We highly recommend this type of underfloor insulation because they’re quite thin (around 4 mm thick). They’re also easy to cut and work with, all while being fairly sturdy and affordable.

Step 2: Measure Your Room Surface

After choosing your ideal type of floor insulation, you’ll need to measure your room surface to buy enough rolls for the insulation process. 

Luckily, your measurement here doesn’t need to be highly accurate, as you only need a rough approximation. 

However, make sure that you always round up to the higher value) and get extra insulation because it’s better to have more than less while covering your floor.

Step 3: Spread Your Insulating Material on the Floor

Roll out your insulating material to cover the floor. Ideally, you should start from one corner of the room and spread it all the way to the other end. This gives a better finish at the end and helps you save on insulation rolls.

Remember that it’s always better to have excess than missing parts, so make sure that you cover the floor from end to end and that the insulating is butted up against the walls, skirtings, and doorframe.

Don’t worry about the width of the rolls, as you’ll cover the rest of the surface once you’re done with your first layer.

Step 4: Cut the Insulating Material to Fit the Surface

After reaching the proper length necessary for the foam insulation, you’ll need to cut it. For precision and reliability, you should use a utility knife. Yet, any sharp knives or scissors can also do the trick.

After cutting the rolls to the required length, you should also use your cutting tool to trim any excess and create room for pipes and other irregularities near the walls. The target here is to have the rolls covering the entire floor and running smoothly along the edges of the wall.

Step 5: Fix the Insulating Material on the Floor

Before installing another layer of foam, you’ll need to fix the first one to the floor. The easiest way to do this is by stapling it to the floor beneath. 

Here are some essential tips to consider:

  • You can opt for glue as long as you don’t use solvent adhesives, as they can react with the aluminium foil layer and compromise the performance of the insulator. 
  • Thermal-seal double-sided tape works, but it may not hold up properly with time.

Step 6: Lay Another Sheet of the Material Next to the Previous One

Now that the first layer of the insulator is fully attached and trimmed, it’s time to lay an adjacent one. Leaving any gaps between the layers reduces the efficiency of insulation, so make sure that all edges are butted firmly without overlapping before stapling. 

Repeat the previous steps until the floor is fully covered. The final layer adjacent to the opposite side of the wall might require precise trimming, so take your time with that step for maximum efficiency.

Step 7: Leave No Gaps with Tape

After covering the entire surface with insulator rolls and stapling them together, you should cover all the edges where two insulator rolls are butted together. This should also include the edges of where the insulator is butted to the wall.

This helps in creating a complete seal around the room to prevent moisture and cold drafts from slipping through. 

For that step, you simply need aluminium foil tape because it provides excellent insulation compared to other types of tape.

Step 8: Lay Your Flooring

Now that you have your insulation in place, it’s time to lay your flooring normally. While installing carpets, make sure that you add grippers for stability. 

Luckily, they don’t impact the performance of the insulators, so you don’t have to worry about that.

What Are the Benefits of Underfloor Insulation?

Underfloor insulation comes with a variety of advantages, including:

Underfloor Insulation Conclusions

Besides keeping your room comfortable and cosy, underfloor insulation comes with a wide range of advantages, such as reduced energy bills and better noise control.

If you’re interested in insulating your house but you’re having difficulty finding the right people for the job, make sure that you contact Insulation Advisor

We’ll save you the trouble of researching installers by comparing the rates of top-performing and trustworthy contractors in your area.

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