Great Review from our client in Castleford

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Penetrating damp – survey in Sheffield

The owner of this property contacted Cannon as they were experiencing damp patches within their home.

Our surveyor diagnosed penetrating damppenetrating damp due to the poor pointing and weathered masonry.

The building is only 20 years old but is north facing and open to the elements.

Penetrating damp is usually caused by structural problems in a building, cracks in the walls, faulty render, guttering or roof problems.

The most common visual symptom of rain penetration is damp patches on internal walls. The damp usual causes any paint to flake or wall paper to peel. However, damp masonry can also result in a wide range of other symptoms including moss and mould growth and rotting of embedded timbers.


If you would like any advice when dealing with penetrating damp please contact Cannon on 0800 859 5181.

Bridging Damp Proof Course at a survey in Sheffield

Bridging Damp Proof Course.Bridging Damp Proof Course This has been caused by the external boundary wall with no dpc.

Bridging Damp Proof Course occurs when the external ground level is higher than the installed damp-proof course.

Other forms of bridging include external wall renders and internal plastering extending down over the damp proof course line making contact with the ground. Exposed timbers bearing onto the wall may also pose a risk from dampness.


If a membrane dpc is not placed through the full thickness of the wall, moisture will be allowed to cross a mortar “bridge”.  This problem is most commonly seen in older houses where a bituminous felt membrane was used that is less than the full width of the wall. A similar problem can occur when older face brickwork or block work is rendered with the render bridging the dpc. Alternatively, a concrete path or gardens may be located above dpc level and sloped towards the wall. Dampness caused by poorly-laid paths may be resolved by rebuilding the path below the dpc, and sloping it away from the house or adding an enclosed drain in the path adjacent to the wall.

Other issues can be created where mortar droppings at the base of the wall cavity build up and cover the stepped flashing/dpc providing a passage for dampness from the outer to the inner wall. A local dpc insertion above the damp patch, together with the internal application of a waterproof coating of the masonry below the new dpc and then replastering will usually resolve this problem.

Look familiar?

If so contact Cannon to organise a free damp survey on 0800 859 5181 with one of our local surveyors.


Rising damp found on a survey in Manchester

rising damp

Rising damp

Here you can clearly see the damp diagnosed by our surveyor.


Rising Damp in older buildings is fairly common.

Despite being strong built walls unfortunately most were constructed without damp proof course in place.

Modern methods of damp proofing just didn’t exist as they do now.

Because of this older properties are more susceptible to penetrating damp, rising damp and condensation problems.

The complications of damp are ones such as rotting joists, poor health, the destruction of clothes and furniture items. The best thing to do if you are unsure is to contact a surveyor. They will be able to diagnose the problem .

If you think your property is suffering from any form of damp and require a damp survey please contact our office on 0800 859 5181.

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Brick Work Issues found on a survey in Wakefield

Buildings and other structures made from bricks often outlast those made from wood or other materials.

Over time, exposure to moisture and extreme temperatures may leave your brick work with signs of wear with either crumbling mortar or a dull, pollution stained finish.brickwork

Repairing old or damaged bricks and cleaning them down can often return them to their former glory.

Unfortunately the poor brick work to these chimney breasts are in need of a little bit more than maintenance.

A Structural Engineer is in need.

This can all be arranged through Cannon.

If you are in need of any advice regarding structural work please do not hesitate to contact us on 0800 859 5181.