This asset pack, compatible with all Affinity apps but primarily intended for Affinity Designer and Affinity Photo, contains a variety of seamless pattern textures that are saved as Pattern Layers.
Pattern Layers repeat infinitely across the bounds of the document, and can be masked to specific areas. They can also be loaded as bitmap fills when using the Vector Flood Fill tool in Affinity Designer. Please see the Vector Flood Fill with Bitmap Patterns video tutorial for more information on this technique.
When added to a document, each pattern layer comes with at least one nested layer to quickly control the blending: this will typically be a Tone layer, where you can quickly change brightness and contrast of the pattern.
Please note: these assets require at minimum version 1.10 of the Affinity apps (although at least V2 is recommended). The Vector Flood Fill Tool is only available in Affinity Designer 2.1.0 or higher (the tool is also available in Affinity Publisher 2.1.0 via StudioLink).
The assets also come with a bonus macro category called Architectural Renderings, which contain a macro called Masked Texture Group that is hugely beneficial for texturing workflows. All you need to do is make a flood selection of the area you want to texture (don't forget to enable Antialias), then run the macro—a masked group will be created for you, and all you need to do is drag in the patterns you wish to use.
Architecture Patterns .afassets file, PDF readme, bonus Architectural Rendering macros