The prices of different types of waterproofing membranes can vary based on membrane type, brand, region, and application. 

The following are the approximate price ranges for different types of waterproofing membranes:

1. Liquid-Applied Waterproofing Membranes

Cost: about $1 to $4 per square foot

Factors that affect the cost:

Material Type: Polyurethane, Acrylic, or Bitumen-Based

Number of Coatings Applied

Brand and Quality

2. Sheet Waterproofing Membranes

Cost:

Bitumen-Based Membranes: $2 to $6 per square foot.

EPDM Rubber Membranes: $4 to $8 per square foot.

PVC or TPO Membranes: $5 to $10 per square foot.

Factors Influencing Price:

Type of material.

Thickness and durability.

Installation complexity.

3. Cementitious Waterproofing Membranes

Price Range: $0.50 to $3 per square foot.

Factors Influencing Price:

Type of compound and any added polymers.

Coverage area per unit.

Whether it's a single-component or multi-component system.

4. Self-Adhesive Membranes

Price Range: $2 to $5 per square foot.

Factors Influencing Price:

Type of adhesive: rubberized asphalt and modified bitumen

Brand and quality of the product

Whether a primer is needed, adding to the cost

5. Thermoplastic Membranes, TPO, PVC

Price Range: $5 to $10 per square foot

Factors Influencing Price:

Thickness of material and brand

Installation method utilized, such as heat-welded seams

Membrane reflectivity or energy efficiency

Additional Costs to Consider

Installation Costs: Professional installation runs from an added $1 to $5 per square foot, depending on the complexity of the job and

 membrane type used.

Primer or Adhesives: Some membranes may also need additional primers or adhesives, which increase the cost even more.

Protective Layers: Occasionally, protective layers, such as drainage boards or insulation, might be called for, adding to the total.

Shipping and Handling: This depends on the size and the number and can be expansive, mostly so in the case of oversized rolls and heavy

 materials.

Regional Price Differences

Prices will vary depending on where you are. The differences can be a result of local labor price, availability of materials, or regional 

climatic condition.

Conclusion

In budgeting for waterproofing membranes, one has to consider both the material cost and an associated installation expense. However,

 selecting a product for a certain need and applying it properly are very critical for its maximum effect and durability.