Most properties which exist today should have a damp-proof course which is evident at a minimum of mm above ground level. This may appear as a mortar course with a bitumen or plastic DPC sheet poking through.
These materials tend to be very effective, unless the building movement result in them cracking or the DPC is bridged or the older bitumen material breaks down due to old age.
Damp-proof courses are required in all new build properties in order to prevent rising damp from occurring. As noted above there are many factors which can result in a damp-proof course failing. One problem which our specialists commonly encounter is that building renovations have raised the ground level above the existing damp proof course.
This allows the moisture from the ground to bypass the DPC and let moisture penetrate the property. If this occurs, we would recommend that the ground be reduced to mm below the original DPC or if this cannot be done then a new damp proof course will need to be installed. The first step would be to get a specialist damp surveyor to inspect your property and give the correct diagnosis of the damp problem and how it could be fixed.
There are various types of remedial damp-proof courses which can be installed into your property. The appropriate damp proof course will be chosen to suit the construction of the property. A damp-proof course is a standard element which is required when building a property. Initially DPCs consisted of slate or lead barriers, fitted into the walls to protect against rising damp.
More modern properties used bitumen felt and todays properties use a plastic DPC. A DPC may fail because it was not fitted properly or may fail due to deterioration, localised damage or bridging. If the DPC fails then your property may be suffering from rising damp. Rising damp is moisture which defies gravity and moves upwards through walls as a result of capillary action. Tide marks being present on your walls or deterioration of your plaster or decoration are the most visible indication your property is suffering from rising damp.
Forgot Password Lost your password? Ask A Question. DPC above ground level 2. DPC Material for floors, roofs etc. DPC Material for situations where differential thermal movements occur 4. Fig 1: Cross section of Damp Proof Course.
Figure 2: Air Drain. Fig 3: Damp Proof Course Treatment for basement on undrained soils. Fig 4: Plan of building showing DPC. Fig 6: Asphalt tanking for basement. Fig 7: Damp Proof Course for Flooring. What is Damp Proof Course? What is the abbreviation of DPC in Construction? What are the desirable properties of DPC Material? There is no point and it makes no sense.
The membrane is 0. Plinth level : It is also called ground floor level. It is the level where you actually start seeing columns rising, from the floor, though columns penetrate up to footing. Beam which braces the plinth level is called plinth beam. What is the difference between a plinth beam and a DPC? Plinth beam is RCC beam which is provided to control differential settlement in a building or as a support for the wall. It is not required unless structurally necessary.
There is a distinct difference between dampproofing and waterproofing. Dampproofing is intended to keep out soil moisture while waterproofing keeps out both moisture and liquid water. Dampproofing is a coating, usually asphalt-based, that is either sprayed on or hand applied to the outside of the wall.
Methods Of Damp Proofing Membrane damp proofing. In this method of damp proofing a water repellent membrane or damp proof course D. Integral damp proofing. Surface treatment. Cavity wall construction. Sill level or Window Sill level :- The level between the base portion of the window and portion of the floor above ground level upwards is called Sill level.
Approved document C requires that, to prevent rising damp, a damp-proof course should be: Continuous with any damp-proof membrane in the floor. Our Office team make all the arrangements with you, your agent, the vendor, the tenant if there is one and you will be sent an email to confirm the inspection time along with a pre-engagement letter which covers the scope of the inspection.
Good communication and local knowledge are key to you getting the most out of your building and pest inspection. We are always happy to answer all your questions and you are most welcome to be on site when we do the inspection. Our technology, systems and processes also mean you get your high quality report shortly after your inspection is completed. Building and Pest Inspection. Arrange a Building Inspection.
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