Roof insulation
Roof maintenance Willemsen
Insulating your roof? You do that with Dakonderhoud Willemsen
Insulating a roof from the outside is mainly done when repairing or renewing the roof covering. This method is useful if the space under the roof is already finished because the finish does not need to be changed.
Installing roof insulation on the outside prevents loss of space inside, but is more expensive than roof insulation on the inside.
Insulating the roof from the outside
A pitched roof is traditionally insulated on the inside. However, insulation on the outside is also a good option. A roof that is insulated on the outside is also called a 'Sarking roof'. This modern way of insulating on the outside offers a number of advantages over the traditional way of working.
Advantages
Insulate from outside
- The interior of the house remains untouched. There is also no loss of space inside.
- A Sarking roof can be realized quickly. With insulation on the inside, the interior space is uninhabitable for a longer period of time.
- The roof structure is well protected against moisture and weather influences (frost, expansion and shrinkage).
- Interesting for roofing renovations.
- The insulation shell is continuous with this form of roof insulation. This is in contrast to insulation along the inside, where cold bridges can develop more quickly.
Disadvantages
Insulate from outside
Every insulation method has its positive and less positive properties. This is also the case with a Sarking roof. To determine whether roof insulation from the outside is the best option, you should consider the following:
- Insulating a Sarking roof requires the necessary expertise. For example, good air tightness is sometimes difficult to achieve without the right knowledge and experience.
- The type of insulation material used in this form of insulation (often rigid insulation panels) is less soundproof than standard insulation materials such as rock wool and glass wool.
Free & no-obligation quote
Why request a quote from us?
- Free site visit on request
- Quote within 24 hours
- Always competitive prices
Our working method
Discover our 3 steps
Request a quote
Simply request a quote and quickly receive a clear overview of the costs and options.
Accept offer
After receiving the quote, you can accept it and we will continue with the planning.
Project plans
We plan the project according to your preferences and draw up a detailed schedule for implementation.
Existing roof tiles
Recover/Reuse?
Sometimes homeowners wonder whether it is not possible to recover the existing tiles during roof renovation. In principle this is possible, but for the following reasons it is not advisable to do this:
- Old tiles that have been on a non-insulated roof often suffer from invisible frost damage. When they are then placed on a well-insulated roof, there is a risk that they will freeze and break when it freezes.
- It is difficult for the roofer to finish the new roof aesthetically perfect with old tiles. Usually the tiles are not dimensionally stable, which makes laying them difficult.
Roof maintenance Willemsen
Insulating a flat roof
A warm roof refers to the location of the insulation in relation to the roof boarding. In a warm roof, the roof insulation is applied to the outside of the supporting structure. On top of this insulation, a cover or water-repellent layer is then placed, such as epdm, rubber or roofing.
With a warm roof there is no cavity. This means that the roof heats up together with the house. As a result, the roof structure is more resistant to different weather conditions and there is less chance of cracks forming in the roof floor. Roof insulation from the outside also ensures that the roof functions as a heat buffer. The roof stores heat during the day and gradually releases it in the evening.
In the case of a roof insulated on the outside, a vapour barrier is placed under the roof insulation. This prevents moisture from the underlying floor from reaching the insulation and condensing, which has a negative effect on the insulation value.
Insulating a roof from the outside is the most commonly used roof insulation technique, especially for flat roofs. There are 2 options for installation. Either the existing roof skin is removed, or a new warm roof is placed on top of the existing roof skin. The insulation can be installed mechanically using cold glue or a foaming PU glue. It is also possible to install the insulation loosely.
Insulating the roof from the outside
Benefits listed
- Relatively inexpensive compared to other methods.
- Better resistance to temperature fluctuations and therefore less risk of cracking.
- Easier placement of insulation in corners.
- Reduced risk of puddle formation and algae growth.
Make your appointment at
Roof maintenance Willemsen
Do you want to insulate your roof? At Dakonderhoud Willemsen BV you are assured of expert craftsmanship and high-quality materials. Whether it concerns the application of insulation boards, the improvement of existing insulation or the complete renewal of your roof insulation, we ensure that your roof is energy-efficient, sustainable and well-insulated.
Contact us today via the contact form for more information or a free quote. We are ready to take perfect care of your roof insulation!
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What do customers say about us?
Reviews
Super good service, we had our roof renovated with new roof tiles, foil and battens. Men work super hard and accurately, communication is good. Really recommended.
Very pleasant professional experience. Quickly and professionally mounted and handled!
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