I went to fit the handrail on the stairs and when i drilled in to the plaster it just crumbled. So if i knock off some of the plaster back to the brick will sandcement mortar be ok to fill the hole or is there something better to use.
You can use sand/cement render.
But it is common place now to use bonding, browning or hardwall as base coat (undercoat). When one of these products are applied, leave the coat about 3 to 5mm lower then your finished wall and finish of with multi-finish plaster.
If the repair does not cover a big area, a one coat plaster may do you, this will mean no base coat will be need, but some times more than one coat is needed.
All the above products can be found by searching this Link; http://www.british-gypsum.com/products/thistle_plaster_products.aspx
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local