External Rendering with NHL 5 (Natural Hydraulic Lime)

Rendering with NHL 5 (Natural Hydraulic Lime)
Covenham St. Bartholomews, Lincolnshire

We started by removed the existing render from all the external elevations to the property.

The render that we removed was a sand and cement composition, for the age of the property, this type of render was not allowing the property to breathe and the client was having to use de-humidifiers to keep the moisture levels within the property down.

We at A.R.H. Tucker & Sons (Cleethorpes) Ltd, reinstated the render using a lime based product which will enable the property to breath, alleviating most if not all of the need for use of the de-humidifiers.




The reveals into the windows and doors were quite narrow and to give the property the traditional look that it once may have had, our fully qualified tradesmen created a traditional bullnose detailing into the window reveals in the lime render.

Damp can be a common problem in older properties that have been 'updated' or altered. Many materials of the modern day era used for external rendering such as sand and cement render which incorporate a water proofer, are too strong for the substrate they are going on to, this in turn, prevents the building from being able to breathe and locks in moisture.

This can become more prevalent during winter months when natural air flow is totally stemmed as householders keep doors and windows closed to keep warm air in.

During the wet months which we have been encountering more often over the last few summers, we have found that we are attending to more properties with damp issues which would normally not have been noticed until the weather began to change.

This can be due to having external render which has cracked or started to crack; the water seeps into the cracks and pentetrates the buildings which are already struggling to dry out. Then should the temperature drop to freezing, the water which is now trapped behind the render freezes, it expands as it freezes, exerting pressure on the render and ultimately it can blow the render off the building.

Leaving the building looking unsightly and further exposed to the elements.