Home Extensions – Leading 10 Blunders Manufactured by Builders

It might appear nice but did your builder avoid the most prevalent issues whilst developing your home extension?

Oversight one – Excavations & Foundations

The very first aspect of the home extension is usually to with the foundations and you will be shocked to discover that at least twenty five% of the foundations are not positioned straight below the partitions on leading. Excavating off centre or in the improper place is quite prevalent and in a person unique case I had a builder that excavated for a two home aspect extension on the improper aspect of the line that was set up. His ignorance doubled the price tag of the excavations and foundations at the drop of a hat.

Oversight 2 – Damp Proofing System & DPC Membrane

This aspect of you home extension is a slight task but of critical importance. If it’s finished improper the moist enters the new partitions within just a subject of weeks and in excess of a yr or leads to severe moist difficulties.

On a person web site I inspected a number of a long time back the builders had applied plastic rubble luggage to variety a moist proofing system alternatively of applying the accurate width dpc roll.

Oversight 3 – Extensions Are Hardly ever Square

The broad greater part of home extensions do not have one square corner. At least 98% of builders that I have met in the past thirty a long time failed to have a clue as to how to verify if the home extension there were setting up was in simple fact square to the residence.

Oversight four – Expert services in the Flooring

Time and time yet again I have appear throughout copper pipes and electrical cables that are run straight in the concrete floors without any variety of sleeving or defense. Copper pipes corrode rapidly when encased straight in concrete as the cement practically eats the copper. As for the concept of electrical cables working around reside within just the concrete without any sleeving well that just make the hair on my neck stand up.

Oversight five – Windows & Doors

You might assume this is an quick task but when yet again it is pretty prevalent that the height of windows and doorways are frequently comprised mainly because the height of the floor was laid improper or the bricklayer built a oversight. Preferably all you really should see in a doorway to the backyard garden is the picket threshold and not a minimal wall below it. In some instances you really don’t even see the threshold mainly because the body was set in as well minimal and this similarly is just very poor workmanship.

Oversight 6 – Flooring Heights

New floor heights are amazing in the various ways they can be botched. Likely the worst situation is when they are as well high usually ensuing in a step up from the principal residence all mainly because the builder failed to drop the floor a bit much more when setting up the extension.

Oversight seven – Air flow To The Sub Flooring

When you develop a aspect or rear extension to an older residence with ventilated sub floors it is vital that you carry on to give ventilation via the new extension floor. It truly is a basic process that charges peanuts but 8 moments out of 10 the builder does not hassle and the conclusion is consequence is usually dry rot within just a number of a long time.

Oversight eight – Insulation eight

A number of a long time in the past extensions were constructed with minimal or no insulation. I’m happy to say moments have changed and that you are now essential to have insulation within just partitions, ceilings and floors. Most area councils now insist on more dry lining with an insulation backed board to breeze block partitions so make sure you builder conforms. Also make sure that they place at least 100mm of insulation into any concrete floors. If you really don’t explain to them they wont hassle and setting up regulate might not decide it up.

Oversight nine – Drainage

This has to be a person of the simpler duties that invariably receives finished badly or in simple fact skipped out as a great deal as probable.

When you incorporate a whole width extension you ought to generally enable for the rainwater from the principal roof. Time and time yet again you see that this drinking water is left to discharge on to the extension roof which it is just not meant to take place as it will generally guide to premature difficulties.

The other point of system is that rainwater is not meant to discharge into soil stacks and has to have it have implies of likely in to the sewer technique or soak-absent. If your builder receives this improper its usually a large problem to place right at a later on day.

Oversight ten – Encroachment

I left encroachment until past primarily mainly because its an unfamiliar phrase to the builders and to most property owners but can be a large nightmare if it occurs on your develop venture.

Encroachment is where you develop in excess of the boundary line. Most men and women assume this relates to the bodily floor only but in genuine simple fact time and time yet again you see pipes, gutters and cappings that obviously encroach on other qualities which can be a nightmare to place right.

In most instances the builder carries out the encroachment in pure ignorance but it can go away you with a significant bill to place right or in simple fact authorized charges really should you get sued by your neighbors.


The most effective way to stay forward of the game is to be educated.