Pointing on house brickwork

[ramblin]

I was having a look at the pointing on the lower brickwork on my house just before the roughcast starts. I have noticed some of it is badle worn and i would like to fix this. How much should I raggle out before filling with cement and fixing the poining. Also any handy tips on this? Should I add PVA to the mix etc.

novice here.

[Tony McC]

Why point a wall that's about to be daubed with render? Makes no sense!

[danensis]

If its an old wall its probably lime mortar, in which case daubing it with cement based render is a pretty pointless (no pun intended) exercise.

[ramblin]

i am not going to be roughcasting over it at all, what i meant was it's the brickwork prior to the roughcast starting on the walls. sorry for the confusion. So what do i need to do then if cement is of no use?

[Tony McC]

A lime mortar if this is an older wall.

[ramblin]

reckon wall is from the late 50's early 60's

[ramblin]

anyone have a mix for lime mortar for me so i can get this job done?

[Tony McC]

If it's post war, then it'smuch more likely that a cement mortar was used in the construction.

Cut out the existing to a depth of 15-20mm and then use a Class II mortar, weatherstruck, to refill the joints.

Mortar Mixes

Pointing Styles

[ramblin]

so this mix then should be fine made up of Masonry Cement -Sand 1:2½-3½ . Whats the difference with portland cement to masonry cement? or am i waffling here

[simeonronacrete]

Should I add PVA to the mix etc.

When you are working outside or where it may get damp or wet, avoid using PVA. PVA's are moisture sensitive and can break down on contact with water. This could result in your pointing mortar becoming a cracked and friable mortar, potentially becoming loose from the surface.

Instead, use Ronafix, chemically a modified styrene butadiene copolymer dispersion. Mix with cement and sand and water to make your mortar, and point into the cleaned and dampened recess.

Have a look at Ronafix for concrete repair

[SUE @ EASIPOINT]

If you're unsure about mixing your own mortar, we supply pre-bagged mortars, either lime or cement based, which are designed to be applied with a simple skeleton gun, making the job quicker and cleaner. As for the raking out, we normally recommend at least one and a half times the joint width.

Take a look at our web site www.easipoint.co.uk and go to the walling section, or give us a call on 01257 224900.

Hope this helps

Sue