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Before removing walls or adding new windows and doors check your house will not fall down

16/6/2020

16 Comments

 
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​People planning to renovate their homes often want to chop out internal walls to change the size of rooms and the configuration and layout of the house. Unfortunately, some of these walls may be holding up the roof or the floor above, so removing them can cause the roof or upper floor to sag, or worse even collapse. In some cases it’s possible to put in extra permanent supporting structures for the roof or upper floor, but these should be designed by and engineer and installed before demolition work starts.

Even cutting additional doors and windows, or enlarging the existing windows can weaken load bearing walls. Additional beams may have to be installed to transfer the loads over the openings. The remaining portion of the walls must be checked to ensure that they’re able to carry the additional loads from above.

All buildings are supported by some form of foundation. The detail of the foundation will depend on the ground on which the structure is built, as well as the load that the foundation must carry. If the building is on rock the foundations may be light, while buildings on weak ground will have more substantial foundations, even including reinforcing steel. It may appear easy to demolish an internal wall and rebuild it a few centimetres (inches) away, but if the new wall isn’t constructed on a foundation and only on the existing concrete slab there’ll be problems if the concrete slab has insufficient strength to support the new wall. The concrete slab could crack and the wall settle and crack. This is unsightly and can be dangerous. 

Sometimes foundations aren’t only there to support the structure but they also must hold the house down. For instance, houses made of lightweight materials in an area prone to hurricanes, tornadoes and cyclones need be firmly anchored to the ground.
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Image by Ben Kerckx from Pixabay

Check before adding or removing walls when renovating your home

Get an engineer or an expert builder to check your existing foundations and roof before removing walls, knocking holes in existing walls for additional doors and windows, or before building new walls on top of existing floors. Always take care that you are not weakening the existing structure of your house. This could be dangerous and result in additional costs to repair parts of the house that are damaged when the existing structure is weakened and moves.
See what happened to this house when contractors were working in the basement. The whole house collapsed bringing the neighbours house down as well.

Learn more about renovating and building houses

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Click on this picture to read more on Amazon
Paul Netscher has written 2 easy to read books 'An Introduction to Building and Renovating Houses - Volumes 1 and 2'. An Introduction to Building and Renovating Houses Volume 1 deals with Hiring Contractors, Managing Construction and Finishing Your Home.  and Designing your ideal home Volume 2 deals with Finding Your Ideal Property and Designing Your Dream Home. 
​("Great for those that DIY. Very helpful in home renovations!" said a Reader on Amazon.com 5*****)
These books are available from Amazon and other online bookstores in paper and ebook.

© 2020 This article is not to be reproduced for commercial purposes without written permission from the author.
16 Comments
Taylor Hicken link
26/3/2021 12:08:29 pm

You made a good point when you shared that it is important to find an expert builder to examine your existing foundations and roof before removing any walls. My father just mentioned the other day that he is thinking of doing a home improvement project so he can have a bigger living room as he wants to have an open concept home. I will suggest to him looking for a reliable service that can help cut those concrete walls.

Reply
Chimney Repair link
18/5/2021 09:43:21 am

Great article! This is what every homeowners should read. Even if we are not professionals, I think it is better if we knew some kind of information like this. Thanks for sharing this.

Reply
Masonry Kamloops link
7/10/2021 01:34:01 pm

I'm glad you wrote this article. It's so easy to forget how many things we need to think about before we start knocking down walls and adding windows or doors.

Reply
roofing contractor near me link
21/10/2021 06:33:44 pm



I came across your article " Before you demolish or add to your house, have an engineer inspect it" and found it very interesting. I am looking for a contractor who will conduct engineering checks on the load-bearing walls in my home.

Reply
demolition contractors link
8/11/2021 06:09:55 pm

I'm a big fan of your blog. I found myself nodding along with this post . It was so insightful and practical!

Reply
Yuba City Window link
20/11/2021 03:37:56 pm

Your article is quite helpful! I am glad that I found your blog. This is such useful information for property holders. Thanks for sharing this valuable information

Reply
Renewal By Andersen link
29/11/2021 08:41:16 pm

This is one of best articles I’ve read in my research. I liked all your tips such as we should check before adding or removing walls when renovating your home. This is very valuable information for me about adding new windows and doors. It was very knowledgeable and it provided me with great information.

Reply
Tex Hooper link
7/12/2021 10:34:26 am

Great tip about hiring an engineer to layout your demolition plan. I need to get a contractor to break down my kitchen walls. I'll have to hire someone with previous demo experience.

Reply
https://glassdaddybend.com/ link
16/2/2022 09:43:17 am

Your site is very useful, amazing tips and hints you are giving here.

Thanks for sharing!

Reply
masonry chimney repair abbotsford link
24/2/2022 04:46:09 am



Thanks for the article you posted. I'm a big fan of home improvement so I really enjoyed reading it.

Reply
www.masonrybc.ca link
28/2/2022 10:11:37 am

Your article was super helpful. I read it and then realized that I need to fix some things with my house.

Reply
jen
29/3/2022 08:31:51 am

Thanks for the article you posted. his comment is here

Reply
John Carston link
9/8/2022 11:24:07 am

I like that you said that permanent support should be added if you want to renovate your home and demolish the interior part. Last night, my buddy informed me that he was hoping to find a demolition service for their old property that would be their business store, and he asked if I had any idea what would be the best option to consider. I'm glad for the information on finding the best service provider. I'll tell him that consulting a well-known demolition service can help them with a safe demolition.

Reply
Masonry Wall Davis CA link
16/8/2022 06:10:56 pm

Thank you for sharing this informative article about wall construction. I hope there are a lot of masonry contractors who could read this and be guided accordingly.

Reply
Sun Control Center Tinting link
27/10/2022 06:00:01 pm

Before removing walls or adding new windows, it's important to choose a reputable window installer. Important things to keep in mind when selecting a window installer. Make sure the company is licensed and insured.Ask for references and check online reviews.Get an estimate in writing before work begins.Make sure the company offers a warranty on their work.

Reply
Mia Evans link
16/11/2022 11:32:20 am

I never took into account the fact that there might be issues when you plan to demolish a certain wall that is not built with a foundation and only on a concrete slab. In that case, it is important to be hiring a proper building demolition team who are licensed and experienced in this field to ensure that the right process is done.

Reply



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    Author

    I’m a construction professional, author of several successful construction management books, and a home owner. I’ve made mistakes in construction management, I’ve seen others make mistakes, but importantly I’ve had multiple successful construction projects and I’ve learned from the mistakes. I want to share these lessons and my knowledge with you.
    'An Introduction to Building and Renovating Houses - Volume 1 Hiring Contractors, Managing Construction and Finishing Your Home' are my latest books. packed with tips and information to ensure your home construction project is a success. Get your copy today from Amazon and other online stores.

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  • Construction Home
  • About Paul Netscher
  • +Construction Books
    • Successful Construction Project Management
    • Building a Successful Construction Company
    • Construction Claims
    • Construction Project Management: Tips and Insights
    • Construction Management: From Project Concept to Completion
    • An Introduction to Building and Renovating Houses
    • The Successful Construction Supervisor and Foreman
    • Designing your ideal home
  • Construction Management Services
  • Book Reviews
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  • Blog | Construction Management
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