To sand and seal parquet flooring, start by sanding the floor with a drum sander, working in the direction of the wood grain. Use a finer grit sandpaper to smooth out any rough spots. After sanding, vacuum and wipe the floor clean. Then, apply a wood sealer to protect the floor and enhance its natural color. Finally, apply a coat of polyurethane or varnish to seal the floor and provide a durable finish. Allow each coat to dry completely before applying the next one. **

Concrete should not be mixed with very salty sand as the high salt content can have a detrimental effect on the concrete's strength and durability. The salt can cause corrosion of the steel reinforcement within the concrete, leading to structural issues over time. It is recommended to use clean, freshwater sand when mixing concrete to ensure the quality and longevity of the final product. **

To partially sand and reseal parquet flooring, you can start by sanding the surface lightly with a fine-grit sandpaper to remove any imperfections or scratches. Then, thoroughly clean the area to remove any dust or debris. Next, apply a new coat of sealant or finish to protect and enhance the wood. Make sure to follow the manufacturer's instructions for drying times and application techniques to achieve the best results. **

To partially sand and refinish parquet flooring, start by identifying the areas that need attention and carefully sanding those specific spots with a fine-grit sandpaper. Once the damaged areas are sanded, clean the floor thoroughly to remove any dust and debris. Then, apply a matching stain to the sanded areas and allow it to dry completely. Finally, apply a layer of polyurethane finish to the entire floor to blend the newly refinished areas with the rest of the flooring. **

Concrete paving slabs are laid with jointing sand by first preparing the base with a layer of compacted sand or gravel. The slabs are then laid in the desired pattern, leaving a small gap between each slab for the jointing sand. Once the slabs are in place, the jointing sand is spread over the surface and swept into the gaps, ensuring that the sand fills the joints completely. Finally, the surface is compacted with a plate compactor to settle the slabs and lock the jointing sand in place. This process helps to create a stable and durable surface for the paving slabs. **

No, dry sand is not heavier than wet sand. When sand becomes wet, the water fills the spaces between the grains of sand, adding weight but not necessarily making it heavier. In fact, wet sand can be easier to move and shape because the water helps the grains stick together. **

To make concrete, you typically mix cement, sand, and water in specific proportions. The most common ratio is 1 part cement, 2 parts sand, and 3 parts water. First, mix the dry ingredients (cement and sand) thoroughly. Then, gradually add water while continuously mixing until you achieve a homogeneous mixture with a workable consistency. Finally, the concrete is ready to be poured and shaped into the desired form before it sets and hardens. **

The most suitable sand for setting concrete lawn edging stones is coarse sand. Coarse sand has larger particles that provide better stability and support for the edging stones. It also allows for proper drainage and helps prevent the stones from shifting or sinking over time. Additionally, coarse sand provides a strong base for the edging stones, ensuring they stay in place and maintain their position. **