Updating your old External Walls

 

This week I was asked to survey an older style property on Orbeta in Orba. The new owners were concerned because every time we had heavy rain, they could see damp patches on the inside of their external walls and furthermore the property was quite expensive to heat.

This is a common problem with older properties; basically as the external walls are only one hollow block thick, any water that penetrates the outer rendered face is quickly absorbed into the sponge like block work which then in turn saturates the porous internal plaster face. This not only becomes a nuisance with the constantly deteriorating decorations, plasterwork, mould growth etc. but could also cause a structural problem with the property.


Any water entering the rendered outer face of the wall is usually trapped within the wall. On very cold nights this water can freeze, when water freezes it expands, any expansion between the wall and the render will separate the render from the wall which then usually results in large patches of the render falling off. Any missing render allows even more water to enter the property with even more destructive results. Therefore it is quite important to keep the external rendered face of the property in a good state of repair and decorated as this is your first line of defence. However moving on from this, I would recommend bringing these walls up to current day standards by the introduction of a new internal pot block facing wall and a well insulated cavity. This work is quite simple to carry out and is non structural, it basically consists of fixing rigid polystyrene insulation sheets (between 3 and 5cm thick) to the inside of any affected external walls and then constructing a new 7cm. pot block wall on the inside. On completion, this new composite insulated wall would be plastered and decorated.  Carrying out such minor remedial work will stop water penetration through the wall and massively improve the walls thermal capabilities reducing heat loss, however on the down side this work will result in a slight reduction in the room size of around 10cm (4 inch).


You may say is it all worth it? well to me the answer has got to be yes, taking into account the reduced heating cost and improved quality of life soon outweighs the relatively small investment necessary to carrying out the work.

John Phillips (F.I.A.S. F.A.B.E. M.I.B.C.O. F.F.B. M.R.S.H. C.M.W.O.B.O. M.B.I.M)
Construction Buena Vista

Contact us

Construction Buena Vista
Urb. Palmeria. Orba 03790

 

Please call us on

 

0034 965 577 464 (office)

 

0034 619 089 281 (mobile)

 

or use our contact form.

 

 

Buena Vista Villas s.l.

Urb. Palmeria. Orba 03790

 

Please call us on

 

0034 965 577 464 (office)

 

0034 629 554 561 (mobile)

 

Or simply click the image above