Is N type mortar a good substitute for lime based mortar?
I have an old brick house built in 1915. In some places the bricks are so water damaged that they are deteriorating and turn to sand when touched. I'm about to get a lot of brick work done to the house.
1- I'm getting the front wall pointed--these bricks are actually in okay condition but they absorb water which is ruining the interior plaster walls.
2- I'm getting the bricks under the font porch parged. Only about two feet of the bricks are above grade and they are badly deteriorating and crumble away to the touch. They'll dig to the foundation, parge the bricks, then put a rubber barrier before they back-fill.
3- I'm also having the parapet parged. The bricks are also very crumbling and take in water badly during storms. I attempted to parge this myself with a lime based mortar, but did terrible job.
The mason is going to use N type mortar, which is for old soft bricks, right? Is that okay or will it make my bricks worse in the long run because it does have some cement in it? Will it adhere to my sub-par parging job on the parapet using lime based mortar? Also, will the temperature affect the work? It's about 55-34 degrees around here. Please help!
Posted Nov 17, 2012 1:44 PM ET
Edited Nov 17, 2012 1:44 PM ET
Other Questions in GBA Pro help
Do you recommend closed or open-cell spray foam on roof sheathing in a finished attic space in Chicago that incl. HVAC system?