ACI World Headquarters Submerseal is resitant to chlorine, saline and other dilutions and is capable of resisting head pressure in submersed expansion joints in pools, fountains, waterparks, waste water, potable water and other immersed applications. Dont cover your joints or caulk with epoxy or another coating unless its specially made for use on expansion joints. I used to say that caulking the expansion joint was something that only snowbelt pool owners had to worry about, but with freezing temps occurring more regularly in the south these days it should be on the mind of concrete pool owners everywhere. Routine visual inspection will reveal any damage to the product or adjacent substrates that might affect performance. This is why expansion joints are used. This joint can be created with a 4mm plastic sheet or 2 layers of roofing felt underlayment. As I do not have an expansion joint now, how wide is best, "url": "https://blog.intheswim.com/" Prior to pouring the deck, the level of the grade should be brought up to become level with the top of the bond beam and be very well compacted. It is very important that the waterline tile is installed after the deck is placed so there is no chance of the deck expanding and popping off the tile (see tile placement in the diagram). Date:7/1/2003, Publication:Structural Journal Whenever you need to stop, place the caulking gun onto the cardboard quickly. Expansion & Contraction Joints As Structures from roads and buildings to bridges and tunnels are living moving structures that are under constant stress such as thermal expansion and contraction caused by temperature change, sway caused by wind loads, seismic events, static load deflection, live load deflection, settlement of a new building. When the joint fills with such non-compressible stuff, this removes the gap, and the two structures will move as one. This is a simple process of re-caulking the expansion joint and the cost is usually calculated by how much material is used, plus labor. Best of all, Vulkem 45 SSL cures within 24 hours to a great finishing look. As you pour each slab of concrete, stop and place your joint in between each slab. These tools may vary depending on the size and scope of the project. Hi Fred, push the backer rod so that your depth is 3/8 to 1/4 of caulk. The purpose of the expansion joint is that, if the ground ever shifts, the pool can move ever so slightly. For larger areas, the movement joints will be visible. The expansion joint around your pool allows for the pool deck (and the pool itself)to expand when the weather gets hot. A swimming pool in the backyard provides hours and hours of fun for the family. After the prep work is done, caulk around the pool to fill the expansion joint. Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. If there were no expansion joint, the edges of the swimming pool would crack as well as damage the coping and tiles. Used in residential, commercial, and institutional applications. Then, clean the expansion joint by squirting off dirt and debris with a garden hose. . Fill the tile joint above the expansion joint with polyurethane caulk. Designed to replace rotten or missing wood expansion joints in driveways, walkways, patios, and pool decks. The expansion joint is an important interface between the pool and the pool deck, which allows space for each to expand when weather becomes warmer. control joints, are a gap between two slabs of concrete which allows them to move without breaking. Not all pools need caulking, just in-ground pools with concrete decks and coping stones as shown above; only about 3 million pools in America, that's all. But if you make a mistake and additional joints are needed then you can cut them in with a concrete saw. How deep does the backer get pushed in to the ground between the coping and the bluestone The coping is usually as wide (or wider) than the bond beam (roughly 14-16). So if your slab is 4 inches thick, the slab can be 8 to 12 feet long or wide without requiring an expansion joint. *Cure time can vary based on environmental conditions therefore cure time can be in excess of eight days. 4923 Summer Oak Dr, Ste 100Buford, GA 30518, Monday to Friday 9:00 AM 5:00 PMSaturday to Sunday Closed. [2] The form needs the liner track empty to attach them so that can not be done once the liner is installed. Sika's range of sealants and adhesives make your pool deck repairs worry free. It is being practiced by thousands of pool owners just like you. Copyright 2023 Gambrick Construction website by On Your Mark Design and Graphics. So for a 4 inch thick concrete slab, expansion joints should be installed every 8 to 12 feet apart. Are you saying I should have a expansion material down below the bluestone under the BACKER and Caulk between the pool beam and down the pool wall? Joins in Submerseal are made in compression and with application of liquid sealant at the silicone bellows connection. Concrete & Expansion Device. This is another way concrete can crack. Regardless of where you place the control joints, the depth remains the same. 2. Depth is easy but keeping the line perfectly straight isnt. Expansion joints are placed in concrete to prevent expansive cracks formed due to temperature change. This expansion seal is filled with mastic, a waterproof, putty-like adhesive used as a joint-sealer between concrete sections. 1 good? Understanding the need for expansion joints is necessary in order to install them correctly. Pool. Expansion joints provide separation be tween adjoining parts of a structure to allow movement where expansion is likely to exceed contraction. Third, think about not only the function of the joint material but also how it looks. But when its soft, wet or unstable, place them closer together. Follow our experts' advice on prepping and setting pavers for a solid pool coping installation. We all know what happens when water freezes, it expands nearly 10% in size. If objects such as manhole covers are incorporated in the slab. Featuring an arched silicone-bellows sealing surface and backed by an integral, pressure-resisting impregnated foam backing, Submerseal provides a lasting solution to joint sealing applications where constant exposure to water is expected. You are using an out of date browser. Joints prevent damage to the slab which makes them last longer and look better. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide", Submerseal Product Details Description Silicone-coated, pre-compressed New or Retrofit Chlorine and saline resistant Resists head pressure Details 1/2 to 4 (12 - 100mm) 50% Movement (+25%/-25%) Chemseal Product Details Concrete expansion joints should be installed 2-3 times in feet the thickness of the slab. You may think concrete is so hard that it doesnt move but thats not the case. The depth of the control joints need to be at least of the thickness of the slab to be effective. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide" Search results must be an exact match for the keywords. }, II. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Could you clarify? In some cases, the precast coping will not be as wide as the bond beam and a notch on the backside will need to be made either during the placement of the gunite/shotcrete or saw cut after it has cured. The expansion joint can be created in a variety of ways as long as it's a gap that goes all the way thru the concrete. That gives you a joint every 8 to 12 feet. Once finished, the caulk will take about 24 hours to dry. It looks nice if you install it correctly. Its easier to remove snow and ice from the surface. Expansion joints need to be installed 2 to 3 times in feet the thickness of a concrete slab in inches. All Rights Reserved. Often the line of delineation between . Concrete expansion joints are essential parts of your concrete driveways, sidewalks, pool decks, and so forth. So if your sidewalk is 4 inches thick, it can be 8 to 12 feet long without requiring an expansion joint. It can also shift with the movement of the earth. Your IP: 193.70.64.70, Requested URL: www.concreteconstruction.net/how-to/construction/leakproof-joints-in-swimming-pools_o, User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) GSA/219.0.457350353 Mobile/15E148 Safari/604.1. Please enter this 5 digit unlock code on the web page. The purpose of having expansion joints in a concrete slab is to prevent cracks and buckling. "caption": "In The Swim Blog" Email Address is required Expansion joints are provided in slabs, pavements, buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures. Copyright 1998-2023 by EMSEAL Joint Systems, Ltd. All rights reserved. Method 1. Login. grind the top 1/4 of both sides, to remove dirt and oils that will affect the bond with the new caulk. It is a chemical-resistant, ultraviolet stable, non-absorbent, low density, cost-effective, compressible foam that offers an extended service life in both interior and exterior applications. The decking needs to be demolished and hauled away, the soil compacted, a gravel bed put down, and a reinforcing bar installed. }, Buy the size that is slightly larger than the widest part of your joint. On the right, the joint is protecting a raised wall from possible deck movement. It is the responsibility of the installer to monitor cure. Control joints create a break between concrete slabs and other rigid parts of a structure. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. Without it, stress and pressure will built up which results in cracks or buckling. Very large expansion joints use expansion joint covers. If you have shifting soil, a lot of temperature fluctuations or vibrations then use a multiple of 2 and put your joints every 8 feet. Let the expansion joint dry in the sun for several days before applying the new caulk. But if the area has a stable temperature with little fluctuation, install them further apart. Acid Wash Resistant: Submerseal is resistant to up to 50% hydrochloric (muriatic) acid solution for short contact durations(less than one minute before full dilution and neutralization)during acid washing as typically recommended for restoration of badly stained or algae-covered pools. When the expansion joint is not proper, but is partially filled with debris, rain and snow melt will stand in the gap, and freeze. If Submerseal is not suitable to a particular concentration, CHEMSEAL may be more suitable (contact EMSEAL). So.I have a gunite pool. Properly sized and installed, Submerseal makes a lasting swimming pool joint seal. If your slab butts up against another structure like a foundation then use a joint at the end between the slab and concrete wall. Caulking the expansionjoint keeps out water. An expansion joint is a necessity when building a pool. Expansion joints are more common on big commercial projects and often aren't required when pouring residential slabs. After that you should gauge out the old caulk and reapply.Fill in any small cracks you see too. Thanks, you twowill check out the PCA/ACI idea. Expansion joints or more appropriately called isolation joints are an essential part of constructing a structurally sound pool and deck. Expansion joints arent just for the inside joints. Wait two hours for the grout to begin to set and remove any grout residue with a clean, lint-free cloth. This pressure relieves itself by cracking. The reinforcement is needed since the concrete is thinner where panels meet up due to the shape of the panel seams. 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