Damp Proofing in Hertfordshire

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Damp Proofing in Hertfordshire

Extensions such as garage conversions will usually require additional damp proofing to be added during the conversion, as the existing garage will typically have a single skin design for walls and floors, which was not designed to be in accordance with building regulations for habitable rooms. This damp proofing will need to be added to walls and floors. Additionally, the roofing of the garage conversion will require water proofing. The damp proofing of the floor of the garage conversion will usually be performed by using a damp proof membrane. This membrane will come in either solid or liquid form. The damp proof membrane will be put down either on top of the existing concrete floor, below the new floor, or as part of both, depending on if the floor will be a solid or a floating floor. In a few garages, the walls will have already been damp proofed, but this might have to be updated as part of the conversion in order to meet current building regulations. The walls should be damp proofed to be able to safeguard the brickwork from rotting slowly as moisture sets in. This is accomplished by either employing damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls already present in the garage. Damp proofing is a part of the building regulations that the garage conversion should adhere to, and so is it vital to make sure that your garage conversion incorporates appropriate damp proofing methods.

Average Damp proofing cost in Hertfordshire

The average cost of Damp proofing is £1500. Costs vary based upon the materials and the organisation selected. The upper price range can be as high as £1725. The material costs are in general about £375

Average price per Damp proofing job in 2026

Avg. price low

Avg. price low
£1,125
Avg. price

Avg. price
£1,500
Avg. price high

Avg. price high
£1,725

£1900

£1425

£950

£475

£0

Prices based on actual Damp proofing costs for Hertfordshire, as reported by local LeadsDoWork members.

Damp proofing installation cost in Hertfordshire 2026

Labour cost £1,050
Material cost £375
Waste removal £75
Time frame: 3-5 days
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Hertfordshire

Hertfordshire carries a population greater than one million people today, neighboring the counties of Essex, Buckinghamshire and Greater London. The county has a large population density, with 1,750 inhabitants per square mile. It is the UK's 14th most inhabited region. With a huge amount of properties in the district of Hertfordshire it's important to keep your property up-to-date. The easiest way of doing this is to employ reputable tradesmen in the Hertfordshire district for all of your development work.

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Similar Customer Enquiries for Damp proofing in Hertfordshire

04 Jun

Damp Proofing

Potters Bar - EN6

Enquiry from: Priyanka R

Start Date: Immediate

To review the damp, see the source, take damp readings and advise the best course of action

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10 Mar

Damp Proofing

St. Albans - AL4

Enquiry from: Nick W

Start Date: Immediate

I have penetrating damp on a solid 9inch wall

Property: terrace

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12 Jan

Damp Proofing

St. Albans - AL3

Enquiry from: Alan S

Start Date: Immediate

Check out damp intrusion coming through walls

Property: terrace

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11 Jan

Damp Proofing

Bishop's Stortford - CM23

Enquiry from: Car M

Start Date: Immediate

TEST WALLS basement hack off half of wals plaster left tank will be at address 11.30 to 3 sunday and later on monday

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09 Dec

Damp Proofing

Potters Bar - EN6

Enquiry from: Nik D

Start Date: Immediate

Possible water penetration in two places in the house

Property: semi detached

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21 Nov

Damp Proofing

Harpenden - AL5

Enquiry from: Ben T

Start Date: Immediate

I think i have damp in one bedroom, and it gets much colder than the rest of the house. Another room gets mouldy in one corner, not sure if thats something you can help with. The room where i think it

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08 Nov

Damp Proofing

Welwyn Garden - AL8

Enquiry from: Gregory D

Start Date: Immediate

We had someone quote for DPC repair on one corner of our house where it has clearly failed. But I wanted to see what it would cost to do the whole house while we are at it

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06 Oct

Damp Proofing

Bishop's Stortford - CM23

Enquiry from: Evie R

Start Date: Immediate

Hello [Company Name], I own a property in Bishop’s Stortford and have noticed possible damp and mould behind my kitchen cabinets. I’ve also seen small insects (psocids) which I understand may be l

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02 Oct

Damp Proofing

Waltham Cross - EN8

Enquiry from: Lorena S

Start Date: Immediate

A building survey was done and it seems that there is some rising damp in the living room and some possible issues with the isolation in one of the bedrooms. I'd appreciate it if we could discuss thes

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29 Aug

Damp Proofing

Bishop's Stortford - CM23

Enquiry from: Carla M

Start Date: Immediate

MAJOR leaks left by insurance company have ingressed into the walls and been tested and surveyed to high damp levels and failed tanking to basement floor and outside toilet courtyard. Quote for all wo

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15 Jul

Damp Proofing

Royston - SG8

Enquiry from: Vikas K

Start Date: Immediate

Looking for a damp consultant/builder, we have an extension where the dampness in the wall from the bottom up is seen. Upon removing the flooring boards, we see there is a black surface with a membran

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03 Mar

Damp Proofing

Welwyn Garden City - AL7

Enquiry from: Yvonne M

Start Date: Immediate

Since replacing a conservatory roof, i have a damn issue

Property: terrace

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02 Feb

Damp Proofing

Tring - HP23

Enquiry from: Anna P

Start Date: Immediate

We are in the process of purchasing a property and would like to arrange for a PCA-registered damp and timber specialist to conduct an inspection before exchanging contracts. Our survey has highlighte

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11 Jan

Damp Proofing

Berkhamsted - HP4

Enquiry from: Nick W

Start Date: Immediate

We have some damage to 1 wall which is caused by damp - most likely due to external problems with roof and wall. We would appreciate it if you could come to provide an estimate for repair and any furt

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18 Nov

Damp Proofing

Bishop's Stortford - CM23

Enquiry from: James D

Start Date: Immediate

The main issues are dampness in downstairs bathroom and second floor bathroom, as well as potentially the living room. there is also ceiling damage and staining in the downstairs cupboard due to a pos

Property: terrace

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FAQs

How can I tell what type of damp I’ve got?

Signs of rising damp tend to be close to the ground, usually no higher than a metre. It usually works its way up walls in horizontal lines. Penetrating damp usually develops in patches and can often be much higher up. For more advice, speak to a damp proofing professional.

Why is it important to fix a damp problem?

Damp is a serious problem, particularly if you live in an old property, because it can lead to structural damage. This will cost you big money and could be very dangerous, to yourself and the property. Take damp seriously and get it inspected and resolved as soon as you discover it!

How can I tell if my property has damp?

There are a few visible signs of damp, although it often goes undetected. However, in older or empty properties, this made become detectable through its smell. These include peeling paint and wallpaper, crumbling plaster, mould growth, black spots or spores on walls and ceilings, and rotting skirting boards and flooring.

How quickly can I redecorate my walls after damp proofing has been installed?

You should make sure that all signs of damp have gone before you redecorate your walls. If you want to paint your walls with a water-permeable emulsion paint, you can usually do this after 1 or 2 months. For other types of decoration you should wait longer.

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Overall rating:


Hertfordshire Damp proofing pros are rated 5 out of 5 on average: 2 rated pros, 3 reviews, of 37 pros covering the area.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Damp proofing projects that have been connected with Damp proofing pros to help them. All Damp proofing contractors All Hertfordshire Damp proofing contractors

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