The link makes it somewhat clearer, For "canopy" I was thinking the typical porch canopies that are fitted as a permanent feature. As an awning I think we can forget about snow loads but you still have to think about wind and rain, the principles remain the same.
Rather than use timber blocks I would cast (on the floor for ease of working) concrete block spacers sized to fit and form the holes in them for fixings to pass through with anything suitable such as home made tubes from a toilet roll core (split and wound up tighter to give a small tube). Remove those tubes when set
Then use long anchors into the main wall through your made up spacers. Seal the spacers to the render for weather proofing. (Use the spacers as a guide for drilling the anchor holes to ensure alignment)
For the concrete use a small aggregate (say 10mm) as it is easier to work with in small castings. Even made up using sharp sand and cement may be OK but keep the water in the mix to a minimum. Leave to cure for at least a week before using them
As it is DIY, it may take a couple of hours to make up the spacers but the material is cheap.
If instead you try to use a mortar to fill the holes in the render/insulation you may struggle with the slump that would likely occur.
I would not use timber that is first fixed into the render hole and then fix the brackets to that timber. If you really want to use timber, just use it as a spacer with your fixings going right through into the solid wall.
Rather than use timber blocks I would cast (on the floor for ease of working) concrete block spacers sized to fit and form the holes in them for fixings to pass through with anything suitable such as home made tubes from a toilet roll core (split and wound up tighter to give a small tube). Remove those tubes when set
Then use long anchors into the main wall through your made up spacers. Seal the spacers to the render for weather proofing. (Use the spacers as a guide for drilling the anchor holes to ensure alignment)
For the concrete use a small aggregate (say 10mm) as it is easier to work with in small castings. Even made up using sharp sand and cement may be OK but keep the water in the mix to a minimum. Leave to cure for at least a week before using them
As it is DIY, it may take a couple of hours to make up the spacers but the material is cheap.
If instead you try to use a mortar to fill the holes in the render/insulation you may struggle with the slump that would likely occur.
I would not use timber that is first fixed into the render hole and then fix the brackets to that timber. If you really want to use timber, just use it as a spacer with your fixings going right through into the solid wall.
