The best sand to use for rendering is coarse sand, which can give a smooth finish appropriate for most vernacular buildings. And if it's too wet, then it will slide out. Make sure that you add the water slowly and let the mixer do the hard work. Use the proportions indicated by the analysis. A colouring is sometimes added. Just what I was looking for. If you're mixing in a cement mixer for a larger job, then the easiest way to add the water is to spray it in with a hose. Add sand at a 3:1 ratio. So i have 5' of water. correct sands for texture and colour. Select new bricks … If the building predates the 20th century, the portions of lime and sand are different, making it a different composition. The durability of the wall is highly influenced by the quality of the mortar joints and interior cell grout. Just add water as directed. Compared to polymeric sand, premium joint sand takes less absorption and drying time which makes the restoration process faster and more efficient. This type of sand holds even when the mix is a little richer in lime than a standard pointing … to make it red how much oxide do I use? When i check for the water depth with a string and weight, i hit water at 15'. Rain Defence (author) from UK on May 13, 2014: I always use a 1 to 3 mix. When I need help again I now know where to look . If you don't have enough cement, then the mortar will crumble when it dries. A more accurate definition is that it is the visible edge of the mortar-joint. If you're just doing brickwork or small gaps though, then you don't need to worry and can usually do it in one go. Question #1 how do I determine the size screen point to use If I use a 2" casing pipe with a 3/4" wash pipe in the center I should be able to sample the sand at different depths and measure (micrometer) the granules from the up flow. Cement and sand, with the addition of plasticizer or lime (all mixed with water)makes a building or pointing mortar. What sand do you use for pointing? Applying the sand is the last step in making a paver patio, path or driveway. Rain Defence (author) from UK on December 21, 2012: It's true! I'm about to re-point parts of the rear of our house. For wet pointing dont use fine sand. Then hose it out. This article will provide you with tips and tricks for how to best mix up mortar for all sorts of uses, including for repointing bricks and ridge tiles. do i use 1 part white cement to 3 parts sand. Patio slabs or exposed brickwork, you may need a stronger mix. The sand is mixed with cement at a ratio of 1 to 1 and spread out to … Search our inventory to find the best sand point at the best prices. This is a guide on how to mix sand and cement to make mortar. This stops it from dropping down between the ridge tiles and allows you to build it up effectively. When you start pointing, it can sometimes be beneficial to add the mortar in stages, depending on how and what you're pointing. Type O is 1 part cement, 2 parts lime and 9 parts sand. It's also a good idea to use goggles when you're using a mixer, as it can be pretty painful if some does happen to splash into your eye. You also need to check the mortar by smoothing it off in the bucket with the trowel. Repointing brick or stone is not as simple as it sounds. If you just go over the top of the old mortar, it's a lot quicker, but what you put on will crack and fall off. 'Catch-up' pointing is best undertaken as soon as possible after the paving has been laid, and should be done on a fine day, when there is no chance of rain or frost. Roof cement is primarily used to hold roof tiles, hip tiles and ridge tiles securely in place, it also keeps out rainwater. I’ve only made it once for curiosity’s sake only. I have many years of experience mixing and working with mortar and love to share my expertise to help others complete DIY projects at home. Good sand that is clean and dry will have a theoretical void ratio of 33%. You don't have to worry about getting quantities of the sand cement mix right.