Can you lay a patio level with damp course?
As long as there is a reasonable distance between the top of the patio and the damp course ie one course of brick you will be fine, even more so if you leave a ‘gravel margin’ as you mentioned.
How far below DPC should a patio be?
150mm
The standard arrangement. Paving is kept at least 150mm below the dpc and slopes away from the wall at around 1:60. This may need to be increased to 1:40 for some ‘difficult to drain’ pavings, such as riven flags, or may be decreased for well-draining pavings, such as blocks or plain concrete.
How far below damp course should paving be?
The 150mm below DPC regulation is stipulated to prevent ‘splashback’ of moisture (ie rainwater hitting the ground and ‘splashing’ back up over the DPC.
How far above ground should the damp proof course be?
150 mm
A damp-proof course is a barrier, usually formed by a membrane built into the walls of a property, typically 150 mm above ground level, to prevent damp rising through the walls. Historically, damp-proof courses may have been formed using bitumen, slates, lead, pitch, asphalt or low absorption bricks.
Does a patio need to be below the damp course?
Things to Remember If the patio is next to the house, make sure the area is dug 150mm below the damp proof course of the house. The patio should be laid so that the water runs away from the house.
Can I screed above DPC?
No, you can’t screed above the Membrane.
Is damp course floor level?
Unlike timber suspended floors where the damp proof course will be sited below floor level with solid constructed floors the DPC should always be sited above finished floor level and should be visible.
Can I put decking above damp course?
Can I put decking above damp course? If your decking is going to be an extension of your property, and will be attached to an outside wall, it should be designed so that the top of the deck is at least 15cm below the damp course. Instead, they should leave a 1cm gap between the house and the decking.
How do I know if I have damp proof course?
You can find your DPC by taking a look at the external wall. Look down at ground level and look up about 6 inches or so up the wall. Somewhere around here you will see a thin black line of either slate or plastic running horizontally across the brick work. This is your DPC.
Should damp proof course be below floor level?
What is a damp proof course in construction?
The damp proof course (DPC) is generally applied at basement levels, which restricts the movement of moisture through walls and floors. The selection of materials for the damp proof course and its various methods of applications in buildings is discussed. It should be impervious.
How low below the DPC should the paving be?
The paving/ground level should always be at least 75mm below the DPC. Anything less than that is just asking for trouble.* * The trend for ‘level threshold’ access at patio doors, where the internal floor and external paving are more-or-less at the same level, is the one exception and is considered in far nmore detail on a separate page
How to fix a damp proof plank floor?
Damp proof course injection is one of the most DIY-friendly form of fixing a DPC. This involves a chemical in liquid or cream form. This is injected into the fabric of your home at the level of the old DPC. It creates a water-repelling layer that will stop damp from rising. Chemical DPC is widely available.
What are the best alternatives to a damp course?
The most commonly encountered alternatives are the brick damp course and the slate dpc. The brick dpc uses a clay brick with a very low absorption rate as a barrier to rising damp.