---
title: Advantages of polyurethane insulation in house walls
description: Polyurethane insulation in house walls is the most effective solution to improve energy efficiency without reducing living space.
---

[![Synthesia_Technology_logo-2](https://blog.synthesia.com/hs-fs/hubfs/Synthesia_Technology_logo-2.png?width=200&name=Synthesia_Technology_logo-2.png "Synthesia_Technology_logo-2")](https://blog.synthesia.com/en)

- Applications 
    - [Buildings >](https://blog.synthesia.com/en/topic/building) 
          - [Insulation](https://blog.synthesia.com/en/topic/insulation)
          - [General characteristics](https://blog.synthesia.com/en/topic/general-characteristics)
          - [Energy efficiency](https://blog.synthesia.com/en/topic/energy-efficiency)
          - [Passivhaus](https://blog.synthesia.com/en/topic/passivhaus)
          - [Waterproofing](https://blog.synthesia.com/en/topic/waterproofing)
          - [FIRE SAFETY](https://blog.synthesia.com/en/topic/fire-safety)
    - [Decoration](https://blog.synthesia.com/en/topic/decoration)
    - [Sport](https://blog.synthesia.com/en/topic/sport)
    - [Industry](https://blog.synthesia.com/en/topic/industry)
    - [Medicine](https://blog.synthesia.com/en/topic/medicine)
    - [Furniture](https://blog.synthesia.com/en/topic/furniture)
    - [Textile | Footwear](https://blog.synthesia.com/en/topic/textile-footwear)
    - [Transport](https://blog.synthesia.com/en/topic/transport)
    - [Sustainability | Green Products](https://blog.synthesia.com/en/topic/sustainability-green-products)
    - [Other Products | Applications](https://blog.synthesia.com/en/topic/other-products-applications)
- [Case studies](https://blog.synthesia.com/en/topic/case-studies)
- [Resources](https://blog.synthesia.com/en/documents-videos-synthesia-technology)
- [FAQs](https://blog.synthesia.com/en/frequently-asked-questions)
- [Contact](https://blog.synthesia.com/en/contact-synthesia-technology)
- EN 
    - [ES](https://blog.synthesia.com/es)
    - [FR](https://blog.synthesia.com/fr)
    - [PL](https://blog.synthesia.com/pl)
- [Web](https://www.synthesia.com/en/)

- Applications 
    - [Buildings >](https://blog.synthesia.com/en/topic/building) 
          - [Insulation](https://blog.synthesia.com/en/topic/insulation)
          - [General characteristics](https://blog.synthesia.com/en/topic/general-characteristics)
          - [Energy efficiency](https://blog.synthesia.com/en/topic/energy-efficiency)
          - [Passivhaus](https://blog.synthesia.com/en/topic/passivhaus)
          - [Waterproofing](https://blog.synthesia.com/en/topic/waterproofing)
          - [FIRE SAFETY](https://blog.synthesia.com/en/topic/fire-safety)
    - [Decoration](https://blog.synthesia.com/en/topic/decoration)
    - [Sport](https://blog.synthesia.com/en/topic/sport)
    - [Industry](https://blog.synthesia.com/en/topic/industry)
    - [Medicine](https://blog.synthesia.com/en/topic/medicine)
    - [Furniture](https://blog.synthesia.com/en/topic/furniture)
    - [Textile | Footwear](https://blog.synthesia.com/en/topic/textile-footwear)
    - [Transport](https://blog.synthesia.com/en/topic/transport)
    - [Sustainability | Green Products](https://blog.synthesia.com/en/topic/sustainability-green-products)
    - [Other Products | Applications](https://blog.synthesia.com/en/topic/other-products-applications)
- [Case studies](https://blog.synthesia.com/en/topic/case-studies)
- [Resources](https://blog.synthesia.com/en/documents-videos-synthesia-technology)
- [FAQs](https://blog.synthesia.com/en/frequently-asked-questions)
- [Contact](https://blog.synthesia.com/en/contact-synthesia-technology)
- EN 
    - [ES](https://blog.synthesia.com/es)
    - [FR](https://blog.synthesia.com/fr)
    - [PL](https://blog.synthesia.com/pl)
- [Web](https://www.synthesia.com/en/)

 

 

 

**Welcome to Synthesia's blog!**  
   
Polyurethane Systems, Polyester Polyols and Chemical Specialities  
for construction and industry.

 

 

[Building](https://blog.synthesia.com/en/topic/building) [Insulation](https://blog.synthesia.com/en/topic/insulation)

[0](https://blog.synthesia.com/en/advantages-of-polyurethane-insulation-in-house-walls#comments-listing)

# [Advantages of polyurethane insulation in house walls](https://blog.synthesia.com/en/advantages-of-polyurethane-insulation-in-house-walls)

Polyurethane insulation in house walls is the most effective way to achieve a high degree of [**energy efficiency**](https://blog.synthesia.com/en/insulation-polyurethane-systems-ally-energy-efficiency), which is essential for saving on consumption and emissions; all without reducing interior comfort.

 

![Advantages of polyurethane insulation in house walls](https://blog.synthesia.com/hs-fs/hubfs/17%20-%20Ventajas%20del%20aislamiento%20de%20poliuretano%20en%20muros%20de%20%20viviendas%2002.jpg?width=1200&height=799&name=17%20-%20Ventajas%20del%20aislamiento%20de%20poliuretano%20en%20muros%20de%20%20viviendas%2002.jpg)

## **What kind of walls can we find in a house?**

They can be of three types: load-bearing walls, retaining walls and dividing walls.

The **load-bearing wall** is the one that performs the task of structural support, in addition to carrying its own load. Reinforced concrete and concrete blocks are the most common materials used to build them. 

The **retaining wall** is the one that resists the horizontal loads of the ground and therefore also has an important structural function. They are mainly built with reinforced concrete. 

As for the **dividing walls**, they are the ones that separate rooms and, sometimes, serve as thermal and acoustic insulation. They are usually made of brick, concrete blocks or plasterboard.

 

[![Nueva llamada a la acción](https://no-cache.hubspot.com/cta/default/3332690/a96223be-ba94-42e7-99a0-988ac2d8baf5.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/a96223be-ba94-42e7-99a0-988ac2d8baf5)

## **Why is wall insulation necessary?**

The [**insulation of the building envelope**](https://blog.synthesia.com/en/envelope-insulation-healthy-building) is fundamental to its good energy performance and health. In this task, in addition to floors, roofs and facades, attention must be paid to the interior enclosures and partitions. The reason is that it is common for energy losses to occur through these elements, for damp to be produced and for noise to be transmitted.

Polyurethane insulation of house walls puts a simple and lasting end to these problems and also **effectively eliminates thermal and acoustic bridges.**

 

**![Advantages of polyurethane insulation in house walls](https://blog.synthesia.com/hs-fs/hubfs/17%20-%20Ventajas%20del%20aislamiento%20de%20poliuretano%20en%20muros%20de%20%20viviendas%2002.jpg?width=1200&height=799&name=17%20-%20Ventajas%20del%20aislamiento%20de%20poliuretano%20en%20muros%20de%20%20viviendas%2002.jpg)**

 

## **How can the walls be insulated?**

Polyurethane is an insulating material with a very low thermal conductivity that also protects against humidity and condensation, preventing the appearance of fungi and microorganisms. In addition, given its versatility, it adjusts to the multiple needs and constructive elements of a house, and all without reducing the interior living space.

Thus, the [**injected polyurethane**](https://blog.synthesia.com/en/injected-polyurethane-foam) is the most suitable **thermo-acoustic** solution when there is an air chamber, showing itself to be particularly effective in the case of existing works. The material is injected into the cavity of the chamber, where it expands until it achieves the insulating effect, solving cracks and fissures at the same time. It also provides a continuous and uniform layer with a sealing effect, thus preventing infiltrations. [**The filling of the air chamber**](https://blog.synthesia.com/en/filling-of-air-gap) with injected polyurethane also provides stability to the structure, reinforcing the union between the wall sheets due to its high adherence. It is highly recommended both in rehabilitation and in new construction, since it avoids the use of metallic fixings, which can cause thermal bridges.

Likewise, [**sprayed polyurethane**](https://blog.synthesia.com/en/polyurethane-systems-designed-to-improve-thermal-insulation) is an excellent option, widely used in partitioning, because with the lowest thickness the highest insulation is achieved. It is easy to apply, has great adherence and dimensional stability, and is durable and very cost-effective.

Another option for polyurethane insulation in house walls are the **rigid polyurethane sheets**, very easy to install and with a reduced thickness for high thermo-acoustic performance.

 

[![Nueva llamada a la acción](https://no-cache.hubspot.com/cta/default/3332690/a96223be-ba94-42e7-99a0-988ac2d8baf5.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/a96223be-ba94-42e7-99a0-988ac2d8baf5)

[Share via Facebook](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fblog.synthesia.com%2Fen%2Fadvantages-of-polyurethane-insulation-in-house-walls) [Share via Twitter](https://twitter.com/intent/tweet?url=https%3A%2F%2Fblog.synthesia.com%2Fen%2Fadvantages-of-polyurethane-insulation-in-house-walls&text=Advantages+of+polyurethane+insulation+in+house+walls) [Share via Email](mailto:?subject=Advantages+of+polyurethane+insulation+in+house+walls&body=https%3A%2F%2Fblog.synthesia.com%2Fen%2Fadvantages-of-polyurethane-insulation-in-house-walls) [Share via LinkedIn](https://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fblog.synthesia.com%2Fen%2Fadvantages-of-polyurethane-insulation-in-house-walls&title=Advantages+of+polyurethane+insulation+in+house+walls&summary=Polyurethane+insulation+in+house+walls+is+the+most+effective+solution+to+improve+energy+efficiency+without+reducing+living+space.)

### Related posts

[![Spraying systems for mechanical stabilisation of plastic bathtubs](https://blog.synthesia.com/hubfs/piscina%20syn.jpg)](https://blog.synthesia.com/en/spraying-systems-for-mechanical-stabilisation-of-plastic-bathtubs)

[Spraying systems for mechanical stabilisation of plastic bathtubs](https://blog.synthesia.com/en/spraying-systems-for-mechanical-stabilisation-of-plastic-bathtubs)

[![What are sandwich panels and what are they used for?](https://blog.synthesia.com/hubfs/Qu%C3%A9%20son%20y%20para%20qu%C3%A9%20sirven%20los%20paneles%20s%C3%A1ndwich02.jpg)](https://blog.synthesia.com/en/what-are-sandwich-panels-and-what-are-they-used-for)

[What are sandwich panels and what are they used for?](https://blog.synthesia.com/en/what-are-sandwich-panels-and-what-are-they-used-for)

[![The circular economy in building construction](https://blog.synthesia.com/hubfs/La%20econom%C3%ADa%20circular%20en%20la%20construcci%C3%B3n%20de%20edificios%201.png)](https://blog.synthesia.com/en/the-circular-economy-in-building-construction)

[The circular economy in building construction](https://blog.synthesia.com/en/the-circular-economy-in-building-construction)

### Comments

[Previous post](https://blog.synthesia.com/en/applications-of-polyurethane-foam-injection-and-spray) [Next post](https://blog.synthesia.com/en/what-is-energy-efficiency-in-construction-and-how-is-it-achieved)

#### FEATURED POST

[![PUR/PIR Sandwich Panels Differences](https://blog.synthesia.com/hs-fs/hubfs/imagen.png?width=320&height=213&name=imagen.png)](https://blog.synthesia.com/en/pur/pir-sandwich-panels-differences)

[**PUR/PIR Sandwich Panels Differences**](https://blog.synthesia.com/en/pur/pir-sandwich-panels-differences)

The production of polyurethane rigid foam sandwich panels has become a fundamental tool for high performance building systems.

[![EN - SEGUIR LEYENDO](https://blog.synthesia.com/hs-fs/hubfs/CTAs/EN%20-%20SEGUIR%20LEYENDO.png?width=196&name=EN%20-%20SEGUIR%20LEYENDO.png)](https://blog.synthesia.com/en/pur/pir-sandwich-panels-differences)

#### MOST VIEWED ARTICLES

### Find what you want

This is a search field with an autosuggest feature attached.

- There are no suggestions because the search field is empty.

[![Nueva llamada a la acción](https://no-cache.hubspot.com/cta/default/3332690/b71a2688-4c9d-4378-a930-6ee4a7a72821.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/b71a2688-4c9d-4378-a930-6ee4a7a72821)

[![TDS](https://no-cache.hubspot.com/cta/default/3332690/37bd75db-c0eb-4ef6-98bd-692db21e71f3.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/37bd75db-c0eb-4ef6-98bd-692db21e71f3)

[![Nueva llamada a la acción](https://no-cache.hubspot.com/cta/default/3332690/44512b9e-e979-430c-a603-39573b677aba.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/44512b9e-e979-430c-a603-39573b677aba)

[![visit our website](https://no-cache.hubspot.com/cta/default/3332690/e65ceba0-4cfb-4267-b4c1-989237a59578.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/e65ceba0-4cfb-4267-b4c1-989237a59578)

### CATEGORIES

- [Building (49)](https://blog.synthesia.com/en/topic/building)
- [Case studies (11)](https://blog.synthesia.com/en/topic/case-studies)
- [Decoration (3)](https://blog.synthesia.com/en/topic/decoration)
- [Energy efficiency (5)](https://blog.synthesia.com/en/topic/energy-efficiency)
- [Fire safety (1)](https://blog.synthesia.com/en/topic/fire-safety)
- [Furniture (2)](https://blog.synthesia.com/en/topic/furniture)
- [General characteristics (13)](https://blog.synthesia.com/en/topic/general-characteristics)
- [Industry (10)](https://blog.synthesia.com/en/topic/industry)
- [Insulation (24)](https://blog.synthesia.com/en/topic/insulation)
- [Medicine (2)](https://blog.synthesia.com/en/topic/medicine)
- [Other Products | Applications (5)](https://blog.synthesia.com/en/topic/other-products-applications)
- [Passivhaus (1)](https://blog.synthesia.com/en/topic/passivhaus)
- [Sport (2)](https://blog.synthesia.com/en/topic/sport)
- [Sustainability | Green Products (5)](https://blog.synthesia.com/en/topic/sustainability-green-products)
- [Textile | Footwear (3)](https://blog.synthesia.com/en/topic/textile-footwear)
- [Transport (4)](https://blog.synthesia.com/en/topic/transport)
- [Waterproofing (5)](https://blog.synthesia.com/en/topic/waterproofing)

### SUBSCRIBE TO OUR BLOG

[![resources](https://no-cache.hubspot.com/cta/default/3332690/3483cbfb-6167-47c2-91f1-4e5cf6b4c905.png)](https://cta-redirect.hubspot.com/cta/redirect/3332690/3483cbfb-6167-47c2-91f1-4e5cf6b4c905)

 

**Applications**

 

[Buildings](https://blog.synthesia.com/en/topic/building)  
[Decoration](https://blog.synthesia.com/en/topic/decoration)  
[Sport](https://blog.synthesia.com/en/topic/sport)

[Industry](https://blog.synthesia.com/en/topic/industry)

[Medicine](https://blog.synthesia.com/en/topic/medicine)

 

 

Applications

 

[Furniture](https://blog.synthesia.com/en/topic/furniture)  
[Textile | Footwear](https://blog.synthesia.com/en/topic/textile-footwear)  
[Transport](https://blog.synthesia.com/en/topic/transport)

[Sustainability](https://blog.synthesia.com/en/topic/sustainability-green-products)

[Other applications](https://blog.synthesia.com/en/topic/other-products-applications)

 

 

Resources

 

[Catalogues](https://blog.synthesia.com/en/resources#brochures)  
[Case studies](https://blog.synthesia.com/en/resources#case-study)

[TDS](https://blog.synthesia.com/en/resources#tds)  
[Vídeos](https://blog.synthesia.com/en/resources#videos)

 

 

 

 

[Case studies](https://blog.synthesia.com/en/topic/case-studies)

[FAQs](https://blog.synthesia.com/en/frequently-asked-questions)

[Contact](https://blog.synthesia.com/en/contact-synthesia-technology)  
[Web](https://www.synthesia.com/en)

 

 

 

 

 

 

Find us on social media:

**[**![LinkedIn](https://blog.synthesia.com/hs-fs/hubfs/Iconos/RRSS/linkedin_syn.png?width=35&name=linkedin_syn.png)**](https://www.linkedin.com/company/synthesia-technology/)[![Facebook](https://blog.synthesia.com/hs-fs/hubfs/Iconos/RRSS/facebook_syn.png?width=35&name=facebook_syn.png)](https://www.facebook.com/SynthesiaTechnology) [![YouTube](https://blog.synthesia.com/hs-fs/hubfs/Iconos/RRSS/youtube_syn.png?width=35&name=youtube_syn.png)](https://www.youtube.com/channel/UC0tPsGZzaWHL81Z3zlJpeaA)**

 

 

Languages:

 

[ES](https://blog.synthesia.com/es) | [EN](https://blog.synthesia.com/en) | [FR](https://blog.synthesia.com/fr) | [PL](https://blog.synthesia.com/pl)

 

© Synthesia Technology 2026. All rights reserved. | [Cookies Policy](https://www.synthesia.com/en/cookie-policy/) | [Terms and Conditions website](https://www.synthesia.com/en/terms-and-conditions-of-website-use/) | [Privacy Policy](https://www.synthesia.com/en/website-privacy-notice/)