How we can help?
The BAYSL Team is ready to meet all of your concrete service needs. We work on driveways, curbs, patios, stairs, pool decks, foundations, retaining walls and anything else that requires concrete specific repairing. These jobs require a high level of concrete repairing expertise from professional contractors. Every case is specific so you always want to consider the requirements for the job, the portfolio of the contractor you are considering, and if it requires a specific skill set within the concrete repair realm. As the top concrete contractor in San Francisco, we deliver high-quality jobs at some of the cities lowest costs. We deliver on your expectations for all of your concrete repair needs.
Experience is highly important when it comes to delivering high-quality jobs in concrete repair work. Concrete work requires a number of skills to look clean and restored to new, which is where experience plays a role. You do not want a job done that is obviously a repair job that did not get the area back to its original look. The result should even be better than the original look of the damaged area.
Frequently Asked Questions
What is concrete?
Concrete consists of a mix of ingredients, including Portland cement, pozzolans, water, coarse aggregates, fine aggregates, and additives. Concrete may also contain mineral colors, granulated blast-furnace slag, and blended cement. When fresh, cement can be molded hours after it is produced. Once the initial set time is reached, the concrete continues to gain strength.
What do you charge for concrete?
Concrete cost $10/sqft or $12/sqft for stamped concrete. This does not include the cost of excavating and hauling away of existing landscape, concrete, or pavers.
How is the strength of concrete measured?
Scientists use compression and flexural mechanical strength tests to determine the strength of concrete. The strength of concrete depends to a large degree on the water-cement ratio, and the quality of the aggregates and paste in the cement.
Does concrete gain strength by drying out?
No. Concrete is made by mixing cement, aggregates and water together. When the water comes in contact with the cement a chemical reaction starts to take place. This chemical reaction is called hydration. Hydration is the reaction between the chemicals in water and the chemicals in cement. This reaction forms new compounds and crystals interlocking themselves and the aggregates together. A majority of this reaction takes place over the first month after placing the concrete. Small amounts of additional reaction and strength gains could take place for years as long as moisture is still present to cause more hydration. Actually, when the concrete does finally dry out, it stops gaining strength.
My concrete is cracking after only a short period. Is there something wrong with it and can it be repaired?
All concrete cracks. It has to crack because it contracts during the drying, curing, hardening process, and the bond between the cement paste and the aggregates is not strong enough to withstand that stress. The best way to prevent unsightly cracking is to put joints in your concrete at regular intervals. A good formula is to measure the depth of your structure and multiply the number by three. Use this number to determine the approximate number of feet between joints. (For example, a 4 inch slab of concrete should have joints every 10 to 12 feet.) Uneven shifting of the substructure or sub grade can also cause cracking. This is a structural failure, as opposed to improper curing or jointing as mentioned above. Before repairing any concrete cracking, determine the source of the cracking and remedy that first. Epoxy grout is an excellent crack repair agent.