How to make homemade lime waterproofing to protect the roof from rain

Add water and lime to a container . Bring this mixture to a boil on the stove.
2. Using a grater, grate the bars of soap and alum together .
3. While the water is boiling, add the soap and alum mixture . Then remove it from the heat.
4. Then put the mixture where the cracks are .

How to apply :

continued on the next page